{
    "id": 11342,
    "url": "https://svs.gsfc.nasa.gov/11342/",
    "page_type": "Produced Video",
    "title": "Fermi's Five-year View of the Gamma-ray Sky",
    "description": "This all-sky view shows how the sky appears at energies greater than 1 billion electron volts (GeV) according to five years of data from NASA's Fermi Gamma-ray Space Telescope. (For comparison, the energy of visible light is between 2 and 3 electron volts.) The image contains 60 months of data from Fermi's Large Area Telescope; for better angular resolution, the map shows only gamma rays converted at the front of the instrument's tracker. Brighter colors indicate brighter gamma-ray sources. The map is shown in galactic coordinates, which places the midplane of our galaxy along the center. The five-year Fermi map is available in multiple resolutions below, along with additional plots containing reference information and identifying some of the brightest sources. || ",
    "release_date": "2013-08-21T13:00:00-04:00",
    "update_date": "2021-09-10T15:10:50-04:00",
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        "filename": "Femri_5_year_11000x6189_web.jpg",
        "media_type": "Image",
        "alt_text": "The Fermi LAT 60-month image, constructed from front-converting gamma rays with energies greater than 1 GeV. The most prominent feature is the bright band of diffuse glow along the map's center, which marks the central plane of our Milky Way galaxy. The gamma rays are mostly produced when energetic particles accelerated in the shock waves of supernova remnants collide with gas atoms and even light between the stars.  Hammer projection. Image credit: NASA/DOE/Fermi LAT Collaboration",
        "width": 320,
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        "pixels": 57600
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    "main_video": null,
    "main_credits": {
        "Written by": [
            {
                "name": "Francis Reddy",
                "employer": "University of Maryland College Park"
            }
        ],
        "Visualizations by": [
            {
                "name": "Francis Reddy",
                "employer": "University of Maryland College Park"
            }
        ]
    },
    "progress": "Complete",
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            "description": "This all-sky view shows how the sky appears at energies greater than 1 billion electron volts (GeV) according to five years of data from NASA's Fermi Gamma-ray Space Telescope. (For comparison, the energy of visible light is between 2 and 3 electron volts.) The image contains 60 months of data from Fermi's Large Area Telescope; for better angular resolution, the map shows only gamma rays converted at the front of the instrument's tracker. Brighter colors indicate brighter gamma-ray sources. The map is shown in galactic coordinates, which places the midplane of our galaxy along the center. <p><p>The five-year Fermi map is available in multiple resolutions below, along with additional plots containing reference information and identifying some of the brightest sources.",
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            "description": "The Fermi LAT 60-month image, constructed from front-converting gamma rays with energies greater than 1 GeV. The most prominent feature is the bright band of diffuse glow along the map's center, which marks the central plane of our Milky Way galaxy. The gamma rays are mostly produced when energetic particles accelerated in the shock waves of supernova remnants collide with gas atoms and even light between the stars.  Hammer projection. <p><p>Image credit: NASA/DOE/Fermi LAT Collaboration",
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                        "alt_text": "The Fermi LAT 60-month image, constructed from front-converting gamma rays with energies greater than 1 GeV. The most prominent feature is the bright band of diffuse glow along the map's center, which marks the central plane of our Milky Way galaxy. The gamma rays are mostly produced when energetic particles accelerated in the shock waves of supernova remnants collide with gas atoms and even light between the stars.  Hammer projection. Image credit: NASA/DOE/Fermi LAT Collaboration",
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                        "alt_text": "The Fermi LAT 60-month image, constructed from front-converting gamma rays with energies greater than 1 GeV. The most prominent feature is the bright band of diffuse glow along the map's center, which marks the central plane of our Milky Way galaxy. The gamma rays are mostly produced when energetic particles accelerated in the shock waves of supernova remnants collide with gas atoms and even light between the stars.  Hammer projection. Image credit: NASA/DOE/Fermi LAT Collaboration",
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                        "media_type": "Image",
                        "alt_text": "The Fermi LAT 60-month image, constructed from front-converting gamma rays with energies greater than 1 GeV. The most prominent feature is the bright band of diffuse glow along the map's center, which marks the central plane of our Milky Way galaxy. The gamma rays are mostly produced when energetic particles accelerated in the shock waves of supernova remnants collide with gas atoms and even light between the stars.  Hammer projection. Image credit: NASA/DOE/Fermi LAT Collaboration",
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            "description": "The Fermi LAT 60-month image, constructed from front-converting gamma rays with energies greater than 1 GeV. The most prominent feature is the bright band of diffuse glow along the map's center, which marks the central plane of our Milky Way galaxy. The gamma rays are mostly produced when energetic particles accelerated in the shock waves of supernova remnants collide with gas atoms and even light between the stars. Equidistant cylindrical projection.<p> <p>Image credit: NASA/DOE/Fermi LAT Collaboration",
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                        "alt_text": "The Fermi LAT 60-month image, constructed from front-converting gamma rays with energies greater than 1 GeV. The most prominent feature is the bright band of diffuse glow along the map's center, which marks the central plane of our Milky Way galaxy. The gamma rays are mostly produced when energetic particles accelerated in the shock waves of supernova remnants collide with gas atoms and even light between the stars. Equidistant cylindrical projection. Image credit: NASA/DOE/Fermi LAT Collaboration",
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                        "alt_text": "The Fermi LAT 60-month image, constructed from front-converting gamma rays with energies greater than 1 GeV. The most prominent feature is the bright band of diffuse glow along the map's center, which marks the central plane of our Milky Way galaxy. The gamma rays are mostly produced when energetic particles accelerated in the shock waves of supernova remnants collide with gas atoms and even light between the stars. Equidistant cylindrical projection. Image credit: NASA/DOE/Fermi LAT Collaboration",
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                        "filename": "cmap_car_60m_gt1000_front_gal_16k_web.png",
                        "media_type": "Image",
                        "alt_text": "The Fermi LAT 60-month image, constructed from front-converting gamma rays with energies greater than 1 GeV. The most prominent feature is the bright band of diffuse glow along the map's center, which marks the central plane of our Milky Way galaxy. The gamma rays are mostly produced when energetic particles accelerated in the shock waves of supernova remnants collide with gas atoms and even light between the stars. Equidistant cylindrical projection. Image credit: NASA/DOE/Fermi LAT Collaboration",
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            "url": "https://svs.gsfc.nasa.gov/11342/#media_group_345311",
            "widget": "Single image",
            "title": "",
            "caption": "",
            "description": "This plot overlays the locations of three reference planes on the Fermi sky map: the celestial equator (the plane of Earth's equator projected onto the sky), the ecliptic (the annual apparent path of the sun around the sky as well as the plane of Earth's orbit), and the galactic equator, which marks the central plane of our Milky Way galaxy.<p><p>Image credit: NASA/DOE/Fermi LAT Collaboration",
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                        "filename": "Femri_5_yr_with_ecliptic_equators.jpg",
                        "media_type": "Image",
                        "alt_text": "This plot overlays the locations of three reference planes on the Fermi sky map: the celestial equator (the plane of Earth's equator projected onto the sky), the ecliptic (the annual apparent path of the sun around the sky as well as the plane of Earth's orbit), and the galactic equator, which marks the central plane of our Milky Way galaxy.Image credit: NASA/DOE/Fermi LAT Collaboration",
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                },
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                    "id": 307076,
                    "type": "media",
                    "extra_data": null,
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                    "instance": {
                        "id": 462848,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011300/a011342/Femri_5_yr_with_ecliptic_equators_web.jpg",
                        "filename": "Femri_5_yr_with_ecliptic_equators_web.jpg",
                        "media_type": "Image",
                        "alt_text": "This plot overlays the locations of three reference planes on the Fermi sky map: the celestial equator (the plane of Earth's equator projected onto the sky), the ecliptic (the annual apparent path of the sun around the sky as well as the plane of Earth's orbit), and the galactic equator, which marks the central plane of our Milky Way galaxy.Image credit: NASA/DOE/Fermi LAT Collaboration",
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            "url": "https://svs.gsfc.nasa.gov/11342/#media_group_345312",
            "widget": "Single image",
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            "description": "<b>Constellations</b><p>This plot overlays the boundaries of traditional constellations on the Fermi sky map.  The area of each constellation is labeled with its <b><a href=\"http://ircatalog.gsfc.nasa.gov/constel_names.html\">three-letter abbreviation.</a></b><p><p>Image credit: NASA/DOE/Fermi LAT Collaboration",
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                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011300/a011342/Femri_5_yr_with_constellation_borders.jpg",
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                        "alt_text": "ConstellationsThis plot overlays the boundaries of traditional constellations on the Fermi sky map.  The area of each constellation is labeled with its three-letter abbreviation.Image credit: NASA/DOE/Fermi LAT Collaboration",
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                    "id": 307078,
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                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011300/a011342/Femri_5_yr_with_constellation_borders_web.jpg",
                        "filename": "Femri_5_yr_with_constellation_borders_web.jpg",
                        "media_type": "Image",
                        "alt_text": "ConstellationsThis plot overlays the boundaries of traditional constellations on the Fermi sky map.  The area of each constellation is labeled with its three-letter abbreviation.Image credit: NASA/DOE/Fermi LAT Collaboration",
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            "url": "https://svs.gsfc.nasa.gov/11342/#media_group_345313",
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            "description": "<b>Pulsars</b><p>This plot identifies selected pulsars detected by Fermi's LAT. A pulsar is a type of rapidly rotating neutron star that emits electromagnetic energy at periodic intervals. A neutron star is the closest thing to a black hole that astronomers can observe directly, crushing half a million times more mass than Earth into a sphere no larger than a city. Its matter is so compressed that even a teaspoonful weighs as much as a mountain. One pulsar shines especially bright for Fermi. Called Vela, it spins 11 times a second and is the brightest persistent source of gamma rays the LAT sees. <p><p>Image credit: NASA/DOE/Fermi LAT Collaboration",
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                        "media_type": "Image",
                        "alt_text": "PulsarsThis plot identifies selected pulsars detected by Fermi's LAT. A pulsar is a type of rapidly rotating neutron star that emits electromagnetic energy at periodic intervals. A neutron star is the closest thing to a black hole that astronomers can observe directly, crushing half a million times more mass than Earth into a sphere no larger than a city. Its matter is so compressed that even a teaspoonful weighs as much as a mountain. One pulsar shines especially bright for Fermi. Called Vela, it spins 11 times a second and is the brightest persistent source of gamma rays the LAT sees. Image credit: NASA/DOE/Fermi LAT Collaboration",
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                        "filename": "Femri_5_yr_with_pulsars_web.jpg",
                        "media_type": "Image",
                        "alt_text": "PulsarsThis plot identifies selected pulsars detected by Fermi's LAT. A pulsar is a type of rapidly rotating neutron star that emits electromagnetic energy at periodic intervals. A neutron star is the closest thing to a black hole that astronomers can observe directly, crushing half a million times more mass than Earth into a sphere no larger than a city. Its matter is so compressed that even a teaspoonful weighs as much as a mountain. One pulsar shines especially bright for Fermi. Called Vela, it spins 11 times a second and is the brightest persistent source of gamma rays the LAT sees. Image credit: NASA/DOE/Fermi LAT Collaboration",
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            "widget": "Single image",
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            "description": "<b>2PSC Pulsars</b><p>This plot locates all 117 pulsars in the Fermi LAT Two-year <b><a href=\"http://fermi.gsfc.nasa.gov/ssc/data/access/lat/2yr_catalog/\">Point Source Catalog.</a></b>.",
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                        "media_type": "Image",
                        "alt_text": "2PSC PulsarsThis plot locates all 117 pulsars in the Fermi LAT Two-year Point Source Catalog..",
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                        "media_type": "Image",
                        "alt_text": "2PSC PulsarsThis plot locates all 117 pulsars in the Fermi LAT Two-year Point Source Catalog..",
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            "widget": "Single image",
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            "description": "<b>Active Galaxies</b><p>This plot identifies selected active galaxies detected by Fermi's LAT. An active galaxy is one whose central region exhibits strong emissions at many different wavelengths. What powers these emissions is a well-fed black hole millions of times more massive than our sun. Some of the infalling gas becomes diverted into a pair of oppositely directed particle jets streaming outward at nearly the speed of light. Famous members of this class include NGC 1275 (the bright radio source Perseus A); M87, which sports a jet that can be seen in visible light; and Centaurus A (NGC 5128), whose jet has been operating long enough to form two lobes of radio- and gamma-ray-emitting gas, each up to a million light-years long.   <p><p>Image credit: NASA/DOE/Fermi LAT Collaboration",
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                        "filename": "Femri_5_yr_with_active_gals.jpg",
                        "media_type": "Image",
                        "alt_text": "Active GalaxiesThis plot identifies selected active galaxies detected by Fermi's LAT. An active galaxy is one whose central region exhibits strong emissions at many different wavelengths. What powers these emissions is a well-fed black hole millions of times more massive than our sun. Some of the infalling gas becomes diverted into a pair of oppositely directed particle jets streaming outward at nearly the speed of light. Famous members of this class include NGC 1275 (the bright radio source Perseus A); M87, which sports a jet that can be seen in visible light; and Centaurus A (NGC 5128), whose jet has been operating long enough to form two lobes of radio- and gamma-ray-emitting gas, each up to a million light-years long.   Image credit: NASA/DOE/Fermi LAT Collaboration",
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                        "filename": "Femri_5_yr_with_active_gals_web.png",
                        "media_type": "Image",
                        "alt_text": "Active GalaxiesThis plot identifies selected active galaxies detected by Fermi's LAT. An active galaxy is one whose central region exhibits strong emissions at many different wavelengths. What powers these emissions is a well-fed black hole millions of times more massive than our sun. Some of the infalling gas becomes diverted into a pair of oppositely directed particle jets streaming outward at nearly the speed of light. Famous members of this class include NGC 1275 (the bright radio source Perseus A); M87, which sports a jet that can be seen in visible light; and Centaurus A (NGC 5128), whose jet has been operating long enough to form two lobes of radio- and gamma-ray-emitting gas, each up to a million light-years long.   Image credit: NASA/DOE/Fermi LAT Collaboration",
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                        "pixels": 57280
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            "id": 345316,
            "url": "https://svs.gsfc.nasa.gov/11342/#media_group_345316",
            "widget": "Single image",
            "title": "",
            "caption": "",
            "description": "<b>Blazars</b><p>This plot highlights the most extreme type of active galaxy: blazars. They are the most common objects detected by Fermi's LAT, making up 57 percent of the total sources in the <b><a href=\"http://www.nasa.gov/mission_pages/GLAST/news/gamma-ray-census.html\">second Fermi catalog.</a></b>. Like all active galaxies, blazars are powered by matter falling toward a central supermassive black hole. Some of the infalling material becomes diverted into oppositely directed particle jets that travel outward near the speed of light. What distinguishes blazars is that the galaxy happens to be oriented so that we're looking directly into the jet, which accounts for their intensity and rapid changes in brightness. Some blazars were originally detected in visible light and mistaken for variable stars. The term blazar was coined in 1978 by combining the name of one of these objects (BL Lacertae) with quasar, a word for another class of active galaxy that exhibits less extreme behavior. <p><p>Image credit: NASA/DOE/Fermi LAT Collaboration<p><p>",
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                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011300/a011342/Femri_5_yr_with_blazars.jpg",
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                        "alt_text": "BlazarsThis plot highlights the most extreme type of active galaxy: blazars. They are the most common objects detected by Fermi's LAT, making up 57 percent of the total sources in the second Fermi catalog.. Like all active galaxies, blazars are powered by matter falling toward a central supermassive black hole. Some of the infalling material becomes diverted into oppositely directed particle jets that travel outward near the speed of light. What distinguishes blazars is that the galaxy happens to be oriented so that we're looking directly into the jet, which accounts for their intensity and rapid changes in brightness. Some blazars were originally detected in visible light and mistaken for variable stars. The term blazar was coined in 1978 by combining the name of one of these objects (BL Lacertae) with quasar, a word for another class of active galaxy that exhibits less extreme behavior. Image credit: NASA/DOE/Fermi LAT Collaboration",
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                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011300/a011342/Femri_5_yr_with_blazars_web.jpg",
                        "filename": "Femri_5_yr_with_blazars_web.jpg",
                        "media_type": "Image",
                        "alt_text": "BlazarsThis plot highlights the most extreme type of active galaxy: blazars. They are the most common objects detected by Fermi's LAT, making up 57 percent of the total sources in the second Fermi catalog.. Like all active galaxies, blazars are powered by matter falling toward a central supermassive black hole. Some of the infalling material becomes diverted into oppositely directed particle jets that travel outward near the speed of light. What distinguishes blazars is that the galaxy happens to be oriented so that we're looking directly into the jet, which accounts for their intensity and rapid changes in brightness. Some blazars were originally detected in visible light and mistaken for variable stars. The term blazar was coined in 1978 by combining the name of one of these objects (BL Lacertae) with quasar, a word for another class of active galaxy that exhibits less extreme behavior. Image credit: NASA/DOE/Fermi LAT Collaboration",
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            "widget": "Single image",
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            "caption": "",
            "description": "<b>Normal galaxies</b><p>This plot highlights a selection of bright normal galaxies detected by Fermi's LAT. M31 (the Andromeda galaxy) and the Large and Small Magellanic Clouds, two of the Milky Way's many small satellites, qualify as normal galaxies. Astronomers classify M82 and NGC 253 as \"starburst\" galaxies because they host an unusually high rate of star formation, as well as explosive stellar deaths (supernovae).<p><p>Image credit: NASA/DOE/Fermi LAT Collaboration",
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                        "filename": "Femri_5_yr_with_normal_gals.jpg",
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                        "alt_text": "Normal galaxiesThis plot highlights a selection of bright normal galaxies detected by Fermi's LAT. M31 (the Andromeda galaxy) and the Large and Small Magellanic Clouds, two of the Milky Way's many small satellites, qualify as normal galaxies. Astronomers classify M82 and NGC 253 as \"starburst\" galaxies because they host an unusually high rate of star formation, as well as explosive stellar deaths (supernovae).Image credit: NASA/DOE/Fermi LAT Collaboration",
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                },
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                    "id": 307088,
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                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011300/a011342/Femri_5_yr_with_normal_gals_web.png",
                        "filename": "Femri_5_yr_with_normal_gals_web.png",
                        "media_type": "Image",
                        "alt_text": "Normal galaxiesThis plot highlights a selection of bright normal galaxies detected by Fermi's LAT. M31 (the Andromeda galaxy) and the Large and Small Magellanic Clouds, two of the Milky Way's many small satellites, qualify as normal galaxies. Astronomers classify M82 and NGC 253 as \"starburst\" galaxies because they host an unusually high rate of star formation, as well as explosive stellar deaths (supernovae).Image credit: NASA/DOE/Fermi LAT Collaboration",
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        {
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            "url": "https://svs.gsfc.nasa.gov/11342/#media_group_345318",
            "widget": "Single image",
            "title": "",
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            "description": "<b>Supernova remnants</b><p>This plot shows selected supernova remnants detected by Fermi's LAT. A supernova remnant is the expanding shell of debris caused by the explosion of a star, which creates a nebula that radiates gamma rays, radio waves, X-rays, and light for thousands of years. Cassiopeia A and Tycho, with ages less than 500 years, are among the galaxy's youngest and appear only as point sources in the map. Fermi's LAT can make out extended structure in remnants like W44, IC 443 (the Jellyfish Nebula) and the Cygnus Loop, which are more than 5,000 years old. <p><p>Image credit: NASA/DOE/Fermi LAT Collaboration",
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                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011300/a011342/Femri_5_yr_with_SNRs.jpg",
                        "filename": "Femri_5_yr_with_SNRs.jpg",
                        "media_type": "Image",
                        "alt_text": "Supernova remnantsThis plot shows selected supernova remnants detected by Fermi's LAT. A supernova remnant is the expanding shell of debris caused by the explosion of a star, which creates a nebula that radiates gamma rays, radio waves, X-rays, and light for thousands of years. Cassiopeia A and Tycho, with ages less than 500 years, are among the galaxy's youngest and appear only as point sources in the map. Fermi's LAT can make out extended structure in remnants like W44, IC 443 (the Jellyfish Nebula) and the Cygnus Loop, which are more than 5,000 years old. Image credit: NASA/DOE/Fermi LAT Collaboration",
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                },
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                    "id": 307090,
                    "type": "media",
                    "extra_data": null,
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                        "id": 462863,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011300/a011342/Femri_5_yr_with_SNRs_web.jpg",
                        "filename": "Femri_5_yr_with_SNRs_web.jpg",
                        "media_type": "Image",
                        "alt_text": "Supernova remnantsThis plot shows selected supernova remnants detected by Fermi's LAT. A supernova remnant is the expanding shell of debris caused by the explosion of a star, which creates a nebula that radiates gamma rays, radio waves, X-rays, and light for thousands of years. Cassiopeia A and Tycho, with ages less than 500 years, are among the galaxy's youngest and appear only as point sources in the map. Fermi's LAT can make out extended structure in remnants like W44, IC 443 (the Jellyfish Nebula) and the Cygnus Loop, which are more than 5,000 years old. Image credit: NASA/DOE/Fermi LAT Collaboration",
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        {
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            "widget": "Single image",
            "title": "",
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            "description": "<b>HMBs and globular clusters</b><p>This plot shows high-mass binary systems and globular star clusters detected by Fermi's LAT. Few pairings in astronomy are as peculiar as high-mass binaries, where a hot blue-white star many times the sun's mass and temperature is joined by a compact companion no bigger than Earth — and likely much smaller. Depending on the system, this companion may be a burned-out star known as a white dwarf, a city-sized remnant called a neutron star (also known as a pulsar) or, most exotically, a black hole. One of the high-mass binaries plotted here, 1FGL J1018.6-5856, was discovered by the Fermi team.<p><p>Globular clusters are dense, roughly spherical groupings of tens of thousands of old stars. Astronomers have identified about 150 globular clusters in our galaxy, and the three plotted here — NGC 6266, Terzan 5, and 47 Tucanae — are bright sources for Fermi's LAT. Their brightness at these energies is likely due to the combined gamma-ray glow of many unresolved millisecond pulsars. <p><p>Image credit: NASA/DOE/Fermi LAT Collaboration",
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                    "id": 307091,
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                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011300/a011342/Femri_5_yr_with_GLC_and_HMB.jpg",
                        "filename": "Femri_5_yr_with_GLC_and_HMB.jpg",
                        "media_type": "Image",
                        "alt_text": "HMBs and globular clustersThis plot shows high-mass binary systems and globular star clusters detected by Fermi's LAT. Few pairings in astronomy are as peculiar as high-mass binaries, where a hot blue-white star many times the sun's mass and temperature is joined by a compact companion no bigger than Earth — and likely much smaller. Depending on the system, this companion may be a burned-out star known as a white dwarf, a city-sized remnant called a neutron star (also known as a pulsar) or, most exotically, a black hole. One of the high-mass binaries plotted here, 1FGL J1018.6-5856, was discovered by the Fermi team.Globular clusters are dense, roughly spherical groupings of tens of thousands of old stars. Astronomers have identified about 150 globular clusters in our galaxy, and the three plotted here — NGC 6266, Terzan 5, and 47 Tucanae — are bright sources for Fermi's LAT. Their brightness at these energies is likely due to the combined gamma-ray glow of many unresolved millisecond pulsars. Image credit: NASA/DOE/Fermi LAT Collaboration",
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                },
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                    "id": 307092,
                    "type": "media",
                    "extra_data": null,
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                    "instance": {
                        "id": 462865,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011300/a011342/Femri_5_yr_with_GLC_and_HMB_web.jpg",
                        "filename": "Femri_5_yr_with_GLC_and_HMB_web.jpg",
                        "media_type": "Image",
                        "alt_text": "HMBs and globular clustersThis plot shows high-mass binary systems and globular star clusters detected by Fermi's LAT. Few pairings in astronomy are as peculiar as high-mass binaries, where a hot blue-white star many times the sun's mass and temperature is joined by a compact companion no bigger than Earth — and likely much smaller. Depending on the system, this companion may be a burned-out star known as a white dwarf, a city-sized remnant called a neutron star (also known as a pulsar) or, most exotically, a black hole. One of the high-mass binaries plotted here, 1FGL J1018.6-5856, was discovered by the Fermi team.Globular clusters are dense, roughly spherical groupings of tens of thousands of old stars. Astronomers have identified about 150 globular clusters in our galaxy, and the three plotted here — NGC 6266, Terzan 5, and 47 Tucanae — are bright sources for Fermi's LAT. Their brightness at these energies is likely due to the combined gamma-ray glow of many unresolved millisecond pulsars. Image credit: NASA/DOE/Fermi LAT Collaboration",
                        "width": 318,
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            "extra_data": {}
        },
        {
            "id": 345320,
            "url": "https://svs.gsfc.nasa.gov/11342/#media_group_345320",
            "widget": "Video player",
            "title": "",
            "caption": "",
            "description": "Fermi's portrait of the sky at energies beyond 1 GeV has steadily deepened with the accumulation of more data. This animation compares views of a 20-degree-wide region in the constellation Virgo after the LAT's first and fifth year of operations. Many additional strong sources (yellow, red) appear in the latest image. Most are black-hole-powered galaxies called blazars. In both images, the brightest source is the blazar 3C 279. The view is centered at R.A. 13h 00m, Dec. -2d 00m.<p> <p>Image credit: NASA/DOE/Fermi LAT Collaboration",
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                    "instance": {
                        "id": 462866,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011300/a011342/Fermi_1-5_Year_1000.gif",
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                        "media_type": "Image",
                        "alt_text": "Fermi's portrait of the sky at energies beyond 1 GeV has steadily deepened with the accumulation of more data. This animation compares views of a 20-degree-wide region in the constellation Virgo after the LAT's first and fifth year of operations. Many additional strong sources (yellow, red) appear in the latest image. Most are black-hole-powered galaxies called blazars. In both images, the brightest source is the blazar 3C 279. The view is centered at R.A. 13h 00m, Dec. -2d 00m. Image credit: NASA/DOE/Fermi LAT Collaboration",
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                        "filename": "Fermi_1-5_Year_673.gif",
                        "media_type": "Image",
                        "alt_text": "Fermi's portrait of the sky at energies beyond 1 GeV has steadily deepened with the accumulation of more data. This animation compares views of a 20-degree-wide region in the constellation Virgo after the LAT's first and fifth year of operations. Many additional strong sources (yellow, red) appear in the latest image. Most are black-hole-powered galaxies called blazars. In both images, the brightest source is the blazar 3C 279. The view is centered at R.A. 13h 00m, Dec. -2d 00m. Image credit: NASA/DOE/Fermi LAT Collaboration",
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                    "type": "media",
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                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011300/a011342/Fermi_1-5_yr_050.png",
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                        "media_type": "Image",
                        "alt_text": "Fermi's portrait of the sky at energies beyond 1 GeV has steadily deepened with the accumulation of more data. This animation compares views of a 20-degree-wide region in the constellation Virgo after the LAT's first and fifth year of operations. Many additional strong sources (yellow, red) appear in the latest image. Most are black-hole-powered galaxies called blazars. In both images, the brightest source is the blazar 3C 279. The view is centered at R.A. 13h 00m, Dec. -2d 00m. Image credit: NASA/DOE/Fermi LAT Collaboration",
                        "width": 1000,
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                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011300/a011342/Fermi_1-5_yr_050_web.png",
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                        "media_type": "Image",
                        "alt_text": "Fermi's portrait of the sky at energies beyond 1 GeV has steadily deepened with the accumulation of more data. This animation compares views of a 20-degree-wide region in the constellation Virgo after the LAT's first and fifth year of operations. Many additional strong sources (yellow, red) appear in the latest image. Most are black-hole-powered galaxies called blazars. In both images, the brightest source is the blazar 3C 279. The view is centered at R.A. 13h 00m, Dec. -2d 00m. Image credit: NASA/DOE/Fermi LAT Collaboration",
                        "width": 320,
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                },
                {
                    "id": 307094,
                    "type": "media",
                    "extra_data": null,
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                    "instance": {
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                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011300/a011342/Fermi_1-5_Year_H264_1000x1000_29.97.mov",
                        "filename": "Fermi_1-5_Year_H264_1000x1000_29.97.mov",
                        "media_type": "Movie",
                        "alt_text": "Fermi's portrait of the sky at energies beyond 1 GeV has steadily deepened with the accumulation of more data. This animation compares views of a 20-degree-wide region in the constellation Virgo after the LAT's first and fifth year of operations. Many additional strong sources (yellow, red) appear in the latest image. Most are black-hole-powered galaxies called blazars. In both images, the brightest source is the blazar 3C 279. The view is centered at R.A. 13h 00m, Dec. -2d 00m. Image credit: NASA/DOE/Fermi LAT Collaboration",
                        "width": 1000,
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                        "pixels": 1000000
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                },
                {
                    "id": 307095,
                    "type": "media",
                    "extra_data": null,
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                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011300/a011342/Fermi_1-5_Year_MPEG-4_1000x1000_29.97.mp4",
                        "filename": "Fermi_1-5_Year_MPEG-4_1000x1000_29.97.mp4",
                        "media_type": "Movie",
                        "alt_text": "Fermi's portrait of the sky at energies beyond 1 GeV has steadily deepened with the accumulation of more data. This animation compares views of a 20-degree-wide region in the constellation Virgo after the LAT's first and fifth year of operations. Many additional strong sources (yellow, red) appear in the latest image. Most are black-hole-powered galaxies called blazars. In both images, the brightest source is the blazar 3C 279. The view is centered at R.A. 13h 00m, Dec. -2d 00m. Image credit: NASA/DOE/Fermi LAT Collaboration",
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                },
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                    "id": 307100,
                    "type": "media",
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                        "media_type": "Movie",
                        "alt_text": "Fermi's portrait of the sky at energies beyond 1 GeV has steadily deepened with the accumulation of more data. This animation compares views of a 20-degree-wide region in the constellation Virgo after the LAT's first and fifth year of operations. Many additional strong sources (yellow, red) appear in the latest image. Most are black-hole-powered galaxies called blazars. In both images, the brightest source is the blazar 3C 279. The view is centered at R.A. 13h 00m, Dec. -2d 00m. Image credit: NASA/DOE/Fermi LAT Collaboration",
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                        "pixels": 518400
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                },
                {
                    "id": 307093,
                    "type": "media",
                    "extra_data": null,
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                    "caption": null,
                    "instance": {
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                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011300/a011342/Fermi_1-5_Year_ProRes_1000x1000_30fps.mov",
                        "filename": "Fermi_1-5_Year_ProRes_1000x1000_30fps.mov",
                        "media_type": "Movie",
                        "alt_text": "Fermi's portrait of the sky at energies beyond 1 GeV has steadily deepened with the accumulation of more data. This animation compares views of a 20-degree-wide region in the constellation Virgo after the LAT's first and fifth year of operations. Many additional strong sources (yellow, red) appear in the latest image. Most are black-hole-powered galaxies called blazars. In both images, the brightest source is the blazar 3C 279. The view is centered at R.A. 13h 00m, Dec. -2d 00m. Image credit: NASA/DOE/Fermi LAT Collaboration",
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            "id": 345321,
            "url": "https://svs.gsfc.nasa.gov/11342/#media_group_345321",
            "widget": "Single image",
            "title": "",
            "caption": "",
            "description": "This image identifies several blazars and one pulsar (PSR J1312+00) in a 20-degree-wide patch in the constellation Virgo. The view is centered at R.A. 13h 00m, Dec. -2d 00m. The LAT image is a five-year exposure of gamma rays with energies greater than 1 billion electron volts (GeV). Brighter colors indicate brighter gamma-ray sources.<p> <p>Image credit: NASA/DOE/Fermi LAT Collaboration",
            "items": [
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                    "id": 307101,
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                    "instance": {
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                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011300/a011342/5-yr_LAT_animation_panel_labels.jpg",
                        "filename": "5-yr_LAT_animation_panel_labels.jpg",
                        "media_type": "Image",
                        "alt_text": "This image identifies several blazars and one pulsar (PSR J1312+00) in a 20-degree-wide patch in the constellation Virgo. The view is centered at R.A. 13h 00m, Dec. -2d 00m. The LAT image is a five-year exposure of gamma rays with energies greater than 1 billion electron volts (GeV). Brighter colors indicate brighter gamma-ray sources. Image credit: NASA/DOE/Fermi LAT Collaboration",
                        "width": 993,
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                        "pixels": 984063
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                },
                {
                    "id": 307102,
                    "type": "media",
                    "extra_data": null,
                    "title": null,
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                    "instance": {
                        "id": 462875,
                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011300/a011342/5-yr_LAT_animation_panel_labels_web.png",
                        "filename": "5-yr_LAT_animation_panel_labels_web.png",
                        "media_type": "Image",
                        "alt_text": "This image identifies several blazars and one pulsar (PSR J1312+00) in a 20-degree-wide patch in the constellation Virgo. The view is centered at R.A. 13h 00m, Dec. -2d 00m. The LAT image is a five-year exposure of gamma rays with energies greater than 1 billion electron volts (GeV). Brighter colors indicate brighter gamma-ray sources. Image credit: NASA/DOE/Fermi LAT Collaboration",
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        {
            "id": 345322,
            "url": "https://svs.gsfc.nasa.gov/11342/#media_group_345322",
            "widget": "Single image",
            "title": "",
            "caption": "",
            "description": "Fermi LAT one-year exposure of a 20-degree-wide region in the constellation Virgo. Brighter colors indicate brighter gamma-ray sources.<p> <p>Image credit: NASA/DOE/Fermi LAT Collaboration",
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                    "id": 307103,
                    "type": "media",
                    "extra_data": null,
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                    "instance": {
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                        "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011300/a011342/1yr.png",
                        "filename": "1yr.png",
                        "media_type": "Image",
                        "alt_text": "Fermi LAT one-year exposure of a 20-degree-wide region in the constellation Virgo. Brighter colors indicate brighter gamma-ray sources. Image credit: NASA/DOE/Fermi LAT Collaboration",
                        "width": 1000,
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                },
                {
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            "title": "Fermi's 15-year View of the Gamma-Ray Sky",
            "description": "This image shows the entire sky as seen by Fermi's Large Area Telescope. Lighter colors indicate brighter gamma-ray sources. The map is centered on the center of our galaxy. The most prominent feature is the bright, diffuse glow running along the middle of the map, which marks the central plane of our Milky Way galaxy. The gamma rays there are mostly produced when energetic particles accelerated in the shock waves of supernova remnants collide with gas atoms and even light between the stars. Many of the star-like features above and below the Milky Way plane are distant galaxies powered by supermassive black holes. Many of the bright sources along the plane are pulsars. The image was constructed from 15 years of observations using front-converting gamma rays with energies greater than 1 GeV. Hammer projection with black background.Credit: NASA/DOE/Fermi LAT CollaborationAlt text: Fermi 15-year all-sky gamma-ray mapImage description: A colorful oval map sits in the middle of a black background. The oval is predominantly royal blue, striped with an irregular bright red, orange, and yellow band horizontally across the center, which shows the plane of our Milky Way galaxy. Smaller dots and splotches in red, orange, yellow, and white appear throughout the oval. || intens_ait_180m_gt1000_psf3_gal_0p1.png (3600x1800) [2.9 MB] || intens_ait_180m_gt1000_psf3_gal_0p1_print.jpg (1024x512) [290.2 KB] || intens_ait_180m_gt1000_psf3_gal_0p1_searchweb.png (320x180) [74.2 KB] || intens_ait_180m_gt1000_psf3_gal_0p1_thm.png (80x40) [4.6 KB] || ",
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                "media_type": "Image",
                "alt_text": "This image shows the entire sky as seen by Fermi's Large Area Telescope. Lighter colors indicate brighter gamma-ray sources. The map is centered on the center of our galaxy. The most prominent feature is the bright, diffuse glow running along the middle of the map, which marks the central plane of our Milky Way galaxy. The gamma rays there are mostly produced when energetic particles accelerated in the shock waves of supernova remnants collide with gas atoms and even light between the stars. Many of the star-like features above and below the Milky Way plane are distant galaxies powered by supermassive black holes. Many of the bright sources along the plane are pulsars. The image was constructed from 15 years of observations using front-converting gamma rays with energies greater than 1 GeV. Hammer projection with black background.Credit: NASA/DOE/Fermi LAT CollaborationAlt text: Fermi 15-year all-sky gamma-ray mapImage description: A colorful oval map sits in the middle of a black background. The oval is predominantly royal blue, striped with an irregular bright red, orange, and yellow band horizontally across the center, which shows the plane of our Milky Way galaxy. Smaller dots and splotches in red, orange, yellow, and white appear throughout the oval. ",
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            "title": "Fermi's 12-year View of the Gamma-ray Sky",
            "description": "This image shows the entire sky as seen by Fermi's Large Area Telescope. The most prominent feature is the bright, diffuse glow running along the middle of the map, which marks the central plane of our Milky Way galaxy. The gamma rays there are mostly produced when energetic particles accelerated in the shock waves of supernova remnants collide with gas atoms and even light between the stars. Many of the star-like features above and below the Milky Way plane are distant galaxies powered by supermassive black holes. Many of the bright sources along the plane are pulsars. The image was constructed from 12 years of observations using front-converting gamma rays with energies greater than 1 GeV. Hammer projection.Credit: NASA/DOE/Fermi LAT Collaboration || Fermi_144-month_Fermi_all-sky_hammer_2160x1080.png (2160x1080) [2.4 MB] || Fermi_144-month_Fermi_all-sky_hammer_2160x1080_print.jpg (1024x512) [306.6 KB] || Fermi_144-month_Fermi_all-sky_hammer_4000x2000.png (4000x2000) [7.0 MB] || Fermi_144-month_Fermi_all-sky_hammer_3600x1800.png (3600x1800) [4.9 MB] || ",
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                "media_type": "Image",
                "alt_text": "Same as above but in the equidistant cylindrical projection.Credit: NASA/DOE/Fermi LAT Collaboration",
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        {
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            "page_type": "Produced Video",
            "title": "The Gamma-ray Sky",
            "description": "Gamma rays are the most powerful form of light in the universe. In the darkness of space, these luminous rays, which are invisible to humans but detectable by spacecraft, act as celestial beacons that alert us to some of the most extreme events and objects in the cosmos. For instance, when dying stars explode as supernovae, they emit gamma rays; so do particles being sucked into supermassive black holes; as do pulsars, the rapidly rotating stars that are as massive as our sun but only about the size of Manhattan. Since 2008, NASA’s Fermi spacecraft has observed gamma rays in the Milky Way and beyond. Plotted on a map, the locations of different sources appear as bright spots in the night sky. Watch the video to see how the spacecraft detects gamma rays. || ",
            "release_date": "2014-06-19T00:00:00-04:00",
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                "alt_text": "Magnificent bursts of light help scientists pinpoint the most energetic spots in the universe.",
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            "title": "Highlights of Fermi's First Five Years",
            "description": "This compilation summarizes the wide range of science from the first five years of NASA's Fermi Gamma-ray Space Telescope. Fermi is a NASA observatory designed to reveal the high-energy universe in never-before-seen detail. Launched in 2008, Fermi continues to give astronomers a unique tool for exploring high-energy processes associated with solar flares, spinning neutron stars, outbursts from black holes, exploding stars, supernova remnants and energetic particles to gain insight into how the universe works. Fermi detects gamma rays, the most powerful form of light, with energies thousands to billions of times greater than the visible spectrum.The mission has discovered pulsars, proved that supernova remnants can accelerate particles to near the speed of light, monitored eruptions of black holes in distant galaxies, and found giant bubbles linked to the central black hole in our own galaxy. From blazars to thunderstorms, from dark matter to supernova remnants, catch the highlights of NASA Fermi’s first five years in space.View all the Fermi-related media from the last 5 years in the Fermi Gallery.For more information about Fermi, visit NASA's Fermi webpage. || ",
            "release_date": "2013-08-21T13:00:00-04:00",
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                "media_type": "Image",
                "alt_text": "Short video containing highlights from Fermi's first 5 years of operation.Watch this video on the NASAexplorer YouTube channel.For complete transcript, click here.",
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            "page_type": "Produced Video",
            "title": "NASA's Fermi Space Telescope Explores New Energy Extremes",
            "description": "After more than three years in space, NASA's Fermi Gamma-ray Space Telescope is extending its view of the high-energy sky into a range that to date has been largely unexplored territory. Now, the Fermi team has presented its first \"head count\" of sources in this new realm.Fermi's Large Area Telescope (LAT) scans the entire sky every three hours, continually deepening its portrait of the sky in gamma rays, the most extreme form of light. While the energy of visible light falls between about 2 and 3 electron volts, the LAT detects gamma rays with energies ranging from 20 million electron volts (MeV) to more than 300 billion (GeV).But at higher energies, gamma rays are few and far between. Above 10 GeV, even Fermi's LAT detects only one gamma ray every four months from some sources. The LAT's predecessor, the EGRET instrument on NASA's Compton Gamma Ray Observatory, detected only 1,500 individual gamma rays in this range during its nine-year lifetime, while the LAT detected more than 150,000 in just three years.Any object producing gamma rays at these energies is undergoing extraordinary astrophysical processes. More than half of the 496 sources in the new census are active galaxies, where matter falling into a supermassive black hole powers jets that spray out particles at nearly the speed of light. || ",
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                "url": "https://svs.gsfc.nasa.gov/vis/a010000/a010800/a010887/Fermi-3-year_web.png",
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                "media_type": "Image",
                "alt_text": "Fermi's view of the gamma-ray sky continually improves. This image of the entire sky includes three years of observations by Fermi's Large Area Telescope (LAT). It shows how the sky appears at energies greater than 1 billion electron volts (1 GeV). Brighter colors indicate brighter gamma-ray sources. A diffuse glow fills the sky and is brightest along the plane of our galaxy (middle). Discrete gamma-ray sources include pulsars and supernova remnants within our galaxy as well as distant galaxies powered by supermassive black holes. Credit: NASA/DOE/Fermi LAT Collaboration",
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        {
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            "url": "https://svs.gsfc.nasa.gov/10508/",
            "page_type": "Produced Video",
            "title": "Fermi All-Sky First Year Progress",
            "description": "This view of the gamma-ray sky constructed from one year of Fermi LAT observations is the best view of the extreme universe to date. The map shows the rate at which the LAT detects gamma rays with energies above 300 million electron volts — about 120 million times the energy of visible light — from different sky directions. Brighter colors equal higher rates. || ",
            "release_date": "2009-10-28T01:45:00-04:00",
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                "media_type": "Image",
                "alt_text": "Sequence of dissolves showing the improvement in the Fermi all-sky map, from 1 week to 1 year.",
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            "title": "GLAST First Light All Sky Map",
            "description": "NASA's newest observatory, the Gamma-Ray Large Area Space Telescope (GLAST), has begun its mission of exploring the universe in high-energy gamma rays. The spacecraft and its revolutionary instruments passed their orbital checkout with flying colors. NASA announced today that GLAST has been renamed the Fermi Gamma-ray Space Telescope. The new name honors Prof. Enrico Fermi (1901 - 1954), a pioneer in high-energy physics. Scientists expect Fermi will discover many new pulsars in our own galaxy, reveal powerful processes near supermassive black holes at the cores of thousands of active galaxies across, and enable a search for signs of new physical laws. || ",
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                "url": "https://svs.gsfc.nasa.gov/vis/a010000/a010300/a010347/GLAST_first_light_all_sky_map.00052_print.jpg",
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                "media_type": "Image",
                "alt_text": "Orthographic MapAstronomers wrapped the Fermi Gamma-ray Space Telescope's first all-sky map over a sphere to produce this view of the gamma-ray universe. The globe in this animation rotates showing the galactic plane and the north galactic pole, then tilts up to show the south galactic pole region.",
                "width": 1024,
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