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    "results": [
        {
            "id": 14916,
            "url": "https://svs.gsfc.nasa.gov/14916/",
            "result_type": "Produced Video",
            "release_date": "2025-12-08T09:30:00-05:00",
            "title": "Black Hole Eats Star: The Longest GRB Ever Seen",
            "description": "Unusually long gamma-ray bursts require more exotic origins than typical GRBs. This animation illustrates one proposed explanation for GRB 250702B — the merger of a stellar-mass black hole with its stellar companion. As the black hole makes its last few orbits, it pulls large amounts of gas from the star. At some point in this process, the system begins to shine brightly in X-rays. Then, as the black hole enters the main body of the star, it rapidly consumes stellar matter, blasting gamma-ray jets (magenta) outward and causing the star to explode. Credit: NASA/LSU/Brian MonroeWatch this video on the NASA.gov Video YouTube channel. || Longest_GRB_Animation_Still.jpg (1920x1080) [296.0 KB] || Longest_GRB_Animation_Still_searchweb.png (320x180) [63.7 KB] || Longest_GRB_Animation_Still_thm.png (80x40) [5.5 KB] || NASA_GRB_Sequence_Final_v01.mp4 (1920x1080) [134.3 MB] || Longest_GRB_Animation_Captions.en_US.srt [1.2 KB] || Longest_GRB_Animation_Captions.en_US.vtt [1.2 KB] || NASA_GRB_Sequence_Final_v01.mov (1920x1080) [1.2 GB] || ",
            "hits": 524
        },
        {
            "id": 14146,
            "url": "https://svs.gsfc.nasa.gov/14146/",
            "result_type": "Produced Video",
            "release_date": "2022-05-04T00:00:00-04:00",
            "title": "Black Hole Desktop & Phone Wallpapers",
            "description": "While black holes can’t emit their own light, matter surrounding and falling toward it can create quite a light show. Here you’ll find a collection of data visualizations, illustrations, and telescope images of black hole environments. Download these phone and desktop wallpapers for your screens. || ",
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        },
        {
            "id": 13717,
            "url": "https://svs.gsfc.nasa.gov/13717/",
            "result_type": "Produced Video",
            "release_date": "2020-09-14T11:03:00-04:00",
            "title": "Dr. John Grunsfeld: NASA Astronaut and Astronomer",
            "description": "As an astronaut who operated on Hubble multiple times in orbit, Dr. John Grunsfeld has a unique relationship with the telescope. He’s watched Hubble drift against the background of Earth and stars, and he’s guided new parts and instruments into the telescope and left it whole and healthy.His quest to become an astronaut started at 6 years old. As a child, he toted a lunch box decorated with a NASA Gemini theme, celebrating an early human spaceflight program. This video features Dr. Grunsfeld going over his unique bond with the Hubble Space Telescope.Music Credits:“Vaporous Waters” by Elio Antony [SACEM] via Koka Media [SACEM], and Universal Production Music.  “Innocent Activities” by Benjamin James Parsons [PRS] via Sound Pocket Music [PRS], and Universal Production Music.  “Iron Horse” by Adrien Dennefeld [SACEM] via KTSA Publishing [SACEM], and Universal Production Music. || ",
            "hits": 44
        },
        {
            "id": 30953,
            "url": "https://svs.gsfc.nasa.gov/30953/",
            "result_type": "Hyperwall Visual",
            "release_date": "2018-05-23T11:00:00-04:00",
            "title": "Evaporating Peaks: Pillars in the Monkey Head Nebula",
            "description": "This scientific visualization zooms from the night sky to some pillars in the Monkey Head Nebula (aka NGC 2174). After cross-fading to an infrared view, the sequence showcases the 3D nature of these gaseous peaks. || ngc2174_zoom_reveal-example_frame-1920x1080.png (1920x1080) [2.3 MB] || ngc2174_zoom_reveal-example_frame-1920x1080_print.jpg (1024x576) [105.3 KB] || ngc2174_zoom_reveal-example_frame-1920x1080_searchweb.png (320x180) [92.0 KB] || ngc2174_zoom_reveal-example_frame-1920x1080_thm.png (80x40) [6.6 KB] || ngc2174_zoom_reveal-b-1920x1080.wmv (1920x1080) [46.2 MB] || ngc2174_zoom_reveal-b-1920x1080.m4v (1920x1080) [45.7 MB] || ngc2174_zoom_reveal-1920x1080p30.webm (1920x1080) [6.5 MB] || ngc2174_zoom_reveal-1920x1080p30.mov (1920x1080) [375.6 MB] || evaporating-peaks-pillars-in-the-monkey-head-nebula.hwshow [337 bytes] || ",
            "hits": 39
        },
        {
            "id": 30183,
            "url": "https://svs.gsfc.nasa.gov/30183/",
            "result_type": "Hyperwall Visual",
            "release_date": "2013-10-17T12:00:00-04:00",
            "title": "Urban Growth in Tucson, Arizona",
            "description": "The astronauts who snapped photos of Earth during the Mercury and Gemini missions produced more than just pretty pictures. They planted seeds at the USGS and NASA. In the mid-1960s, the director of USGS proposed a satellite program to observe our planet from above, and later described Landsat as “a direct result of the demonstrated utility of the Mercury and Gemini orbital photography to Earth resource studies.”On a flight in late August 1965, Gemini V astronauts Gordon Cooper and Pete Conrad took photos of the Earth, including a shot showing Tucson, Arizona. A lot changed in the 46 years between that photo and the satellite image acquired in 2011 by the Thematic Mapper on Landsat 5.A comparison of the images shows more city and less green. The expansion of urbanized areas is readily identifiable by the grid pattern of city streets. Between 1965 and 2011, Tucson’s population grew rapidly. In 1970, the population was 262,933; in 2010, it was 520,116. || ",
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        },
        {
            "id": 11250,
            "url": "https://svs.gsfc.nasa.gov/11250/",
            "result_type": "Produced Video",
            "release_date": "2013-04-16T13:00:00-04:00",
            "title": "A Trio of Swift Bursts Form A New Class of GRBs",
            "description": "Three unusually long-lasting stellar explosions discovered by NASA's Swift satellite represent a previously unrecognized class of gamma-ray bursts (GRBs). Two international teams of astronomers studying these events conclude that they likely arose from the catastrophic death of supergiant stars hundreds of times larger than the sun. GRBs are the most luminous and mysterious explosions in the universe. The blasts emit surges of gamma rays — the most powerful form of light — as well as X-rays, and they produce afterglows that can be observed at optical and radio energies. Swift, Fermi and other spacecraft detect an average of about one GRB each day.Traditionally, astronomers have recognized two GRB types, short and long, based on the duration of the gamma-ray signal. Short bursts last two seconds or less and are thought to represent a merger of compact objects in a binary system, with the most likely suspects being neutron stars and black holes. Long GRBs may last anywhere from several seconds to several minutes, with typical durations falling between 20 and 50 seconds. These events are thought to be associated with the collapse of a star several times the sun's mass and the resulting birth of a new black hole. Both scenarios give rise to powerful jets that propel matter at nearly the speed of light in opposite directions. As they interact with matter in and around the star, the jets produce a spike of high-energy light. A detailed study of GRB 111209A, which erupted on Dec. 9, 2011, and continued to produce high-energy emission for an astonishing seven hours, making it by far the longest-duration GRB ever recorded.Another event, GRB 101225A, exploded on Christmas Day in 2010 and produced high-energy emission for at least two hours. Subsequently nicknamed the \"Christmas burst,\" the event's distance was unknown, which led two teams to arrive at radically different physical interpretations. One group concluded the blast was caused by an asteroid or comet falling onto a neutron star within our own galaxy. Another team determined that the burst was the outcome of a merger event in an exotic binary system located some 3.5 billion light-years away.Using the Gemini North Telescope in Hawaii, a team led by Andrew Levan at the University of Warwick in Coventry, England, obtained a spectrum of the faint galaxy that hosted the Christmas burst. This enabled the scientists to identify emission lines of oxygen and hydrogen and determine how much these lines were displaced to lower energies compared to their appearance in a laboratory. This difference, known to astronomers as a redshift, places the burst some 7 billion light-years away. Levan and his colleagues also examined 111209A and the more recent burst 121027A, which exploded on Oct. 27, 2012. All show similar X-ray, ultraviolet and optical emission and all arose from the central regions of compact galaxies that were actively forming stars. The astronomers conclude that all three GRBs constitute a hitherto unrecognized group of \"ultra-long\" bursts.To account for the normal class of long GRBs, astronomers envision a star similar to the size sun's size but with many times its mass. The mass must be high enough for the star to undergo an energy crisis, with its core ultimately running out of fuel and collapsing under its own weight to form a black hole. Some of the matter falling onto the nascent black hole becomes redirected into powerful jets that drill through the star, creating the gamma-ray spike, but because this burst is short-lived, the star must be comparatively small. Because ultra-long GRBs persist for periods up to 100 times greater than long GRBs, they require a stellar source of correspondingly greater physical size. Both groups suggest that the likely candidate is a supergiant, a star with about 20 times the sun's mass that still retains its deep hydrogen atmosphere, making it hundreds of times the sun's diameter.Watch this video on YouTube. || ",
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        },
        {
            "id": 11222,
            "url": "https://svs.gsfc.nasa.gov/11222/",
            "result_type": "Produced Video",
            "release_date": "2013-03-29T11:00:00-04:00",
            "title": "The Path of Comet ISON",
            "description": "Comet C/2012 S1, better known as comet ISON, may become a dazzling sight as it traverses the inner solar system in late 2013. During the weeks before its Nov. 28 close approach to the sun, the comet will be observable with small telescopes, and binoculars. Observatories around the world and in space will track the comet during its fiery trek around the sun. If ISON survives its searing solar passage, which seems likely but is not certain, the comet may be visible to the unaided eye in the pre-dawn sky during December.Watch the animations on this page to visualize ISON's voyage through the inner solar system, or build the paper model of its orbit to track the changing positions of Earth and the comet.Like all comets, ISON is a clump of frozen gases mixed with dust. Often described as \"dirty snowballs,\" comets emit gas and dust whenever they venture near enough to the sun that the icy material transforms from a solid to gas, a process called sublimation. Jets powered by sublimating ice also release dust, which reflects sunlight and brightens the comet. On Nov. 28, ISON will make a sweltering passage around the sun. The comet will approach within about 730,000 miles (1.2 million km) of its visible surface, which classifies ISON as a sungrazing comet. In late November, its icy material will furiously sublimate and release torrents of dust as the surface erodes under the sun's fierce heat, all as sun-monitoring satellites look on. Around this time, the comet may become bright enough to glimpse just by holding up a hand to block the sun's glare.Sungrazing comets often shed large fragments or even completely disrupt following close encounters with the sun, but for ISON neither fate is a forgone conclusion.Following ISON's solar swingby, the comet will depart the sun and move toward Earth, appearing in morning twilight through December. The comet will swing past Earth on Dec. 26, approaching within 39.9 million miles (64.2 million km) or about 167 times farther than the moon.The comet was discovered on Sept 21, 2012, by Russian astronomers Vitali Nevski and Artyom Novichonok using a telescope of the International Scientific Optical Network (ISON) located near Kislovodsk.Learn more about sungrazing comets. || ",
            "hits": 108
        },
        {
            "id": 10991,
            "url": "https://svs.gsfc.nasa.gov/10991/",
            "result_type": "Produced Video",
            "release_date": "2012-07-03T08:00:00-04:00",
            "title": "A Young Star Flaunts its X-ray Spots",
            "description": "Using combined data from a trio of orbiting X-ray telescopes, including NASA's Chandra X-ray Observatory and the Japan-led Suzaku satellite, astronomers have obtained a rare glimpse of the powerful phenomena that accompany a still-forming star. A new study based on these observations indicates that intense magnetic fields drive torrents of gas into the stellar surface, where they heat large areas to millions of degrees. X-rays emitted by these hot spots betray the newborn star's rapid rotation.Astronomers first took notice of the young star, known as V1647 Orionis, in January 2004, near the peak of an outburst. The eruption had brightened the star so much that it illuminated a conical patch of dust now known as McNeil's Nebula. Both the star and the nebula are located about 1,300 light-years away in the constellation Orion. Astronomers quickly determined that V1647 Ori was a protostar, a stellar infant still partly swaddled in its birth cloud. Protostars have not yet developed the energy-generating capabilities of a normal star such as the sun, which fuses hydrogen into helium in its core. For V1647 Ori, that stage lies millions of years in the future. Until then, the protostar shines from the heat energy released by the gas that continues to fall onto it, much of which originates in a rotating circumstellar disk.The mass of V1647 Ori is likely only about 80 percent of the sun's, but its low density bloats it to nearly five times the sun's size. Infrared measurements show that most of the star's surface has a temperature around 6,400 degrees Fahrenheit (3,500 C), or about a third cooler than the sun's. Yet during outbursts, the protostar's X-ray brightness increases by 100 times and the temperature of its X-ray-emitting regions reaches about 90 million F (50 million C). The team found strong similarities among 11 separate X-ray light curves based on data from Chandra, Suzaku and the European Space Agency's XMM-Newton satellites. These similarities allowed them to identify cyclic X-ray variations establishing that the star spins once each day. V1647 Ori is among the youngest stars whose spin rates have been determined using an X-ray-based technique.The cyclic X-ray changes represent the appearance and disappearance of hot regions on the star that rotate in and out of view. The model that best agrees with the observations, say the researchers, involves two hot spots of unequal brightness located on opposite sides of the star. Both spots are thought to be pancake-shaped areas about the size of the sun, but the more southerly spot is about five times brighter. || ",
            "hits": 55
        },
        {
            "id": 3836,
            "url": "https://svs.gsfc.nasa.gov/3836/",
            "result_type": "Visualization",
            "release_date": "2011-06-29T13:00:00-04:00",
            "title": "LRO at the June 15, 2011 Lunar Eclipse: View from the Moon",
            "description": "For Lunar Reconnaissance Orbiter (LRO), the lunar eclipse on June 15, 2011 is likely to be the longest and darkest of its life. This matters because LRO relies on sunlight to power its systems and instruments. Although it spends half of every orbit on the night side of the Moon, each night side pass lasts only an hour. For the June 15 eclipse, LRO will be in the dark for more than twice as long.During a previous total eclipse, LRO hibernated, turning off all of its instruments to conserve its battery power until the Moon emerged from the Earth's shadow. For the June 15 event, LRO will leave on the Diviner Lunar Radiometry Experiment. Diviner will measure the cooling of the Moon's surface during the eclipse. This unique temperature record is expected to reveal information about the roughness and composition of the swath of lunar surface visible to Diviner's sensors during the eclipse.The visualization archived on this page shows the view of the eclipse from the Moon, looking back toward the Earth and the Sun. On the Moon, this event is a solar eclipse. As the Sun disappears behind the Earth, the umbral shadow sweeps across the lunar landscape, and as our eyes adjust to the darkness, the stars come out, and the lunar surface looks a dull red. The atmosphere of the Earth lights up as a red ring around the planet, the sunrises and sunsets all around the edge of the globe lending their faint light to the Moon while the Sun is otherwise blocked. At the start of the eclipse, Australia is facing us, but over time, the Moon sets in eastern Australia while southern Africa rotates into view. LRO streaks through the frame several times on its orbit 50 kilometers above the Moon's surface.Other visualizations in this series depict the view of the eclipsealong the shadow line, with the figures of the umbra, penumbra, and lunar and solar pathsthrough a telescope on Earthflying above LRO as Diviner takes temperature measurementsA narrated piece that uses these visualizations is available in entry #10794. For an explanation of lunar eclipses, visit entry #10787. || ",
            "hits": 137
        }
    ]
}