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    "results": [
        {
            "id": 14922,
            "url": "https://svs.gsfc.nasa.gov/14922/",
            "result_type": "Produced Video",
            "release_date": "2025-12-01T14:00:00-05:00",
            "title": "Anatomy of an Active Galactic Nucleus",
            "description": "An active galactic nucleus, or AGN, is a supermassive black hole at the center of a galaxy that is consuming surrounding matter. Although the black hole itself is not visible, the structures around it emit light across many wavelengths. The artist’s concepts here highlight distinct structures that can accompany an AGN — the photon ring, accretion disk, corona, dusty torus, and relativistic jets. || ",
            "hits": 500
        },
        {
            "id": 14905,
            "url": "https://svs.gsfc.nasa.gov/14905/",
            "result_type": "Produced Video",
            "release_date": "2025-11-28T09:00:00-05:00",
            "title": "Black Hole Environments, Explained",
            "description": "If light can’t escape black holes, how do we know where they are? The regions around them tell an incredible story. From blazing coronas and swirling accretion disks to powerful jets that stretch millions of miles, these extreme environments reveal black holes' secrets and how these mysterious objects shape the universe.Join host Sophia Roberts as she talks with researchers Jenna Cann and Cecilia Chirenti at NASA Goddard about how scientists study these mysterious structures, the challenges of observing the unseeable, and the discoveries that continue to change our understanding of black holes.Credit: NASA’s Goddard Space Flight CenterMusic credits from Universal Production Music:\"Breaking the Barrier,\" David Bertrand Holland\"Dust Spirals,\" Alexandre Prodhomme\"Miniature Universe,\" Geoffrey Wilkinson\"Urban Decay,\" Sarah Natasha Penelope Warne\"Solar Plexus,\" Brandon Seliga\"Polygraph,\" Eric Chevalier\"The Mischief Makers,\" Joaquim Badia\"Maelstrom Dream,\" Lucie Rose\"The Truth Will Out,\" Chris Dony and Beth Perry || 14905_-_BHE_Thumbnail.jpg (1280x720) [947.8 KB] || 14905_-_Black_Hole_Environments_Explained_Captions.en_US.srt [15.7 KB] || 14905_-_Black_Hole_Environments_Explained_Captions.en_US.vtt [14.8 KB] || FINAL_-_14905_-_Black_Hole_Environments_Explained_1080.mp4 (1920x1080) [1.7 GB] || FINAL_-_14905_Black_Hole_Enviroments_Explained_4k.mp4 (3840x2160) [9.2 GB] || FINAL_-_14905_-_Black_Hole_Environments_Explained_ProRes.mov (3840x2160) [39.3 GB] || ",
            "hits": 240
        },
        {
            "id": 14819,
            "url": "https://svs.gsfc.nasa.gov/14819/",
            "result_type": "Produced Video",
            "release_date": "2025-05-06T10:45:00-04:00",
            "title": "NASA's NICER Studies Recurring Cosmic Crashes",
            "description": "Watch how astronomers used data from NASA’s NICER (Neutron star Interior Composition Explorer) to study a mysterious cosmic phenomenon called a quasi-periodic eruption, or QPE.Credit: NASA’s Goddard Space Flight CenterMusic: \"Superluminal\" by Lee Groves [PRS] and Peter Geogre Marett [PRS], Universal Production MusicWatch this video on the NASA Goddard YouTube channel.Complete transcript available. || YTframe_thumbnail_NICER_QPE.jpg (1280x720) [225.7 KB] || YTframe_thumbnail_NICER_QPE_searchweb.png (320x180) [95.5 KB] || YTframe_thumbnail_NICER_QPE_thm.png [8.7 KB] || 14819_NICER_QPE_Good.mp4 (1920x1080) [70.6 MB] || 14819_NICER_QPE_Best.mp4 (1920x1080) [172.3 MB] || 14819_NICER_QPE_Captions.en_US.srt [2.8 KB] || 14819_NICER_QPE_Captions.en_US.vtt [2.7 KB] || 14819_NICER_QPE_ProRes_1920x1080_2997.mov (1920x1080) [1.6 GB] || ",
            "hits": 72
        },
        {
            "id": 14203,
            "url": "https://svs.gsfc.nasa.gov/14203/",
            "result_type": "Produced Video",
            "release_date": "2022-11-15T13:00:00-05:00",
            "title": "Simulations of Weak Black Hole Jets",
            "description": "This sequence shows the simulated evolution of weak jets (orange, pink, and purple) formed by a supermassive black hole as they interact with stars and gas clouds (green, yellow) at the center of a galaxy. The jet is angled about 15 degrees toward the plane of its galaxy and is shown in 12 time steps, with each interval representing 50,000 years. The image at bottom right shows the jets 600,000 years after they formed. Each step is available as a 4K video and as frames by selecting \"Download Options.\"Credit: NASA's Goddard Space Flight Center/R. Tanner and K. Weaver || AGN_time_series_Numbered_print.jpg (1024x576) [109.6 KB] || AGN_time_series_Numbered.jpg (3840x2160) [982.9 KB] || Step1 (4000x4000) [16.0 KB] || AGNwinds_TimeEvolution_Step1_4k_30.webm (4000x4000) [3.2 MB] || Step12 (4000x4000) [16.0 KB] || AGNwinds_TimeEvolution_Step12_4k_30.mp4 (4000x4000) [15.0 MB] || Step11 (4000x4000) [16.0 KB] || AGNwinds_TimeEvolution_Step11_4k_30.mp4 (4000x4000) [15.0 MB] || Step10 (4000x4000) [16.0 KB] || AGNwinds_TimeEvolution_Step10_4k_30.mp4 (4000x4000) [14.9 MB] || Step9 (4000x4000) [16.0 KB] || AGNwinds_TimeEvolution_Step9_4k_30.mp4 (4000x4000) [15.0 MB] || Step8 (4000x4000) [16.0 KB] || AGNwinds_TimeEvolution_Step8_4k_30.mp4 (4000x4000) [15.0 MB] || Step7 (4000x4000) [16.0 KB] || AGNwinds_TimeEvolution_Step7_4k_30.mp4 (4000x4000) [15.0 MB] || Step6 (4000x4000) [16.0 KB] || AGNwinds_TimeEvolution_Step1_4k_30.mp4 (4000x4000) [15.1 MB] || Step5 (4000x4000) [16.0 KB] || AGNwinds_TimeEvolution_Step5_4k_30.mp4 (4000x4000) [15.0 MB] || AGNwinds_TimeEvolution_Step2_4k_30.mp4 (4000x4000) [15.0 MB] || Step4 (4000x4000) [16.0 KB] || AGNwinds_TimeEvolution_Step4_4k_30.mp4 (4000x4000) [15.0 MB] || Step2 (4000x4000) [16.0 KB] || AGNwinds_TimeEvolution_Step6_4k_30.mp4 (4000x4000) [14.9 MB] || Step3 (4000x4000) [16.0 KB] || AGNwinds_TimeEvolution_Step3_4k_30.mp4 (4000x4000) [15.0 MB] || AGNwinds_TimeEvolution_Step10_ProRes_4k_30.mov (4000x4000) [3.1 GB] || AGNwinds_TimeEvolution_Step1_ProRes_4k_30.mov (4000x4000) [387.2 MB] || AGNwinds_TimeEvolution_Step2_ProRes_4k_30.mov (4000x4000) [864.7 MB] || AGNwinds_TimeEvolution_Step12_ProRes_4k_30.mov (4000x4000) [3.3 GB] || AGNwinds_TimeEvolution_Step3_ProRes_4k_30.mov (4000x4000) [1.4 GB] || AGNwinds_TimeEvolution_Step11_ProRes_4k_30.mov (4000x4000) [3.2 GB] || AGNwinds_TimeEvolution_Step4_ProRes_4k_30.mov (4000x4000) [1.9 GB] || AGNwinds_TimeEvolution_Step9_ProRes_4k_30.mov (4000x4000) [2.9 GB] || AGNwinds_TimeEvolution_Step5_ProRes_4k_30.mov (4000x4000) [2.4 GB] || AGNwinds_TimeEvolution_Step8_ProRes_4k_30.mov (4000x4000) [2.8 GB] || AGNwinds_TimeEvolution_Step7_ProRes_4k_30.mov (4000x4000) [2.8 GB] || AGNwinds_TimeEvolution_Step6_ProRes_4k_30.mov (4000x4000) [2.7 GB] || ",
            "hits": 161
        },
        {
            "id": 14217,
            "url": "https://svs.gsfc.nasa.gov/14217/",
            "result_type": "Produced Video",
            "release_date": "2022-11-15T13:00:00-05:00",
            "title": "Creating Black Hole Jets With a NASA Supercomputer",
            "description": "New simulations carried out on the NASA Center for Climate Simulation’s Discover supercomputer show how weaker, low-luminosity jets produced by a galaxy's monster black hole interact with their galactic environment. Because these jets are more difficult to detect, the simulations help astronomers link these interactions to features they can observe, such as various gas motions and optical and X-ray emissions.Credit: NASA's Goddard Space Flight CenterMusic credit: \"Lost Time;\" \"Ascension;\" \"Flowing Cityscape;\" \"Jupiter's Eye;\" \"Pizzicato Piece;\" \"Facts;\" \"Final Words\" all from Universal Production MusicVideo Descriptive Text available.Watch this video on the NASA Goddard YouTube channel.Complete transcript available. || 14217_AGN_OUtflow_Still.jpg (1920x1080) [1.0 MB] || 14217_AGN_OUtflow_Still_searchweb.png (320x180) [92.9 KB] || 14217_AGN_OUtflow_Still_thm.png (80x40) [6.7 KB] || 14217_AGN_Outflow_FINAL_1080.webm (1920x1080) [67.5 MB] || AGN_Outflow_SRT_Captions.en_US.srt [11.4 KB] || 14217_AGN_Outflow_FINAL_1080.mp4 (1920x1080) [632.4 MB] || 14217_AGN_Outflow_FINAL_1080_Best.mp4 (1920x1080) [1.5 GB] || 14217_AGN_Outflow_FINAL_ProRes_1920x1080_24.mov (1920x1080) [6.4 GB] || ",
            "hits": 222
        },
        {
            "id": 14148,
            "url": "https://svs.gsfc.nasa.gov/14148/",
            "result_type": "Produced Video",
            "release_date": "2022-05-05T12:45:00-04:00",
            "title": "Magnetic Flip Drives Flare-Up of Monster Black Hole",
            "description": "Explore the unusual eruption of 1ES 1927+654, a galaxy located 236 million light-years away in the constellation Draco. A sudden reversal of the magnetic field around its million-solar-mass black hole may have triggered the outburst.Credit: NASA’s Goddard Space Flight Center Music: \"Water Dance\" and \"Alternate Worlds\" from Universal Production MusicWatch this video on the NASA Goddard YouTube channel.Complete transcript available. || ChangingLookAGN_Still1.jpg (1920x1080) [822.9 KB] || ChangingLookAGN_Still1_searchweb.png (320x180) [79.5 KB] || ChangingLookAGN_Still1_thm.png (80x40) [6.2 KB] || 14148_ChangingLook_AGN_1080.webm (1920x1080) [24.8 MB] || 14148_ChangingLook_AGN_Sub100MB.mp4 (1920x1080) [91.5 MB] || 14148_ChangingLook_AGN_1080.mp4 (1920x1080) [246.5 MB] || 14148_ChangingLook_AGN_Best_1080.mp4 (1920x1080) [534.7 MB] || 14148_ChangingLook_AGN_SRT_Captions.en_US.srt [4.2 KB] || 14148_ChangingLook_AGN_SRT_Captions.en_US.vtt [4.3 KB] || 14148_ChangingLook_AGN_ProRes_1920x1080_2997.mov (1920x1080) [3.2 GB] || ",
            "hits": 209
        },
        {
            "id": 13798,
            "url": "https://svs.gsfc.nasa.gov/13798/",
            "result_type": "Produced Video",
            "release_date": "2021-01-12T12:15:00-05:00",
            "title": "Swift, TESS Catch Eruptions from an Active Galaxy",
            "description": "Watch as a monster black hole partially consumes an orbiting giant star. In this illustration, the gas pulled from the star collides with the black hole’s debris disk and causes a flare. Astronomers have named this repeating event ASASSN-14ko. The flares are the most predictable and frequent yet seen from an active galaxy. Credit: NASA’s Goddard Space Flight CenterMusic: \"Ruminations\" from Universal Production MusicComplete transcript available. || periodic_AGN_still.jpg (1920x1080) [512.8 KB] || periodic_AGN_still_print.jpg (1024x576) [229.4 KB] || periodic_AGN_still_searchweb.png (320x180) [77.1 KB] || periodic_AGN_still_web.png (320x180) [77.1 KB] || periodic_AGN_still_thm.png (80x40) [6.3 KB] || periodic_AGN_HQ.mp4 (1920x1080) [230.6 MB] || periodic_AGN_LQ.mp4 (1920x1080) [123.5 MB] || periodic_AGN_prores.mov (1920x1080) [1.3 GB] || periodic_AGN_LQ.webm (1920x1080) [13.2 MB] || periodic_AGN_prores.mov.en_US.srt [1.6 KB] || periodic_AGN_prores.mov.en_US.vtt [1.6 KB] || ",
            "hits": 125
        },
        {
            "id": 13696,
            "url": "https://svs.gsfc.nasa.gov/13696/",
            "result_type": "Produced Video",
            "release_date": "2020-08-25T11:00:00-04:00",
            "title": "Young Active Galaxy with ‘TIE Fighter’ Shape",
            "description": "This illustration shows two views of the active galaxy TXS 0128+554, located around 500 million light-years away. Left: The galaxy’s central jets appear as they would if we viewed them both at the same angle. The black hole, embedded in a disk of dust and gas, launches a pair of particle jets traveling at nearly the speed of light. Scientists think gamma rays (magenta) detected by NASA’s Fermi Gamma-ray Space Telescope originate from the base of these jets. As the jets collide with material surrounding the galaxy, they form identical lobes seen at radio wavelengths (orange). The jets experienced two distinct bouts of activity, which created the gap between the lobes and the black hole. Right: The galaxy appears in its actual orientation, with its jets tipped out of our line of sight by about 50 degrees.Credit: NASA’s Goddard Space Flight Center || TXS0128_Side-by-Side_FInal.jpg (7680x2160) [1.8 MB] || TXS0128_Side-by-Side_FInal_Half.jpg (3840x1080) [601.5 KB] || TXS0128_Side-by-Side_FInal_print.jpg (1024x288) [45.4 KB] || TXS0128_Side-by-Side_FInal.jpg.dzi (7680x2160) [178 bytes] || TXS0128_Side-by-Side_FInal.jpg_files (1x1) [4.0 KB] || ",
            "hits": 70
        },
        {
            "id": 12657,
            "url": "https://svs.gsfc.nasa.gov/12657/",
            "result_type": "Produced Video",
            "release_date": "2017-08-08T13:00:00-04:00",
            "title": "AGN Feedback in Markarian 573",
            "description": "Animated illustration of the feedback process thought to be occurring in active galactic nuclei (AGN).Credit: NASA's Goddard Space Flight Center || AGN_Sculpting_Still_print.jpg (1024x576) [54.9 KB] || AGN_Sculpting_Still.jpg (3840x2160) [355.6 KB] || AGN_Sculpting_Still_searchweb.png (320x180) [31.4 KB] || AGN_Sculpting_Still_thm.png (80x40) [3.0 KB] || 12657_AGN_Feedback-Sculpting_1080p.mov (1920x1080) [33.5 MB] || 12657_AGN_Feedback-Sculpting_1080p.webm (1920x1080) [2.7 MB] || 3840x2160_16x9_30p (3840x2160) [32.0 KB] || 12657_AGN_Feedback-Sculpting_4K_Good.mov (3840x2160) [91.3 MB] || 12657_AGN_Feedback-Sculpting_ProRes_3840x2160_30.mov (3840x2160) [708.8 MB] || ",
            "hits": 159
        },
        {
            "id": 12218,
            "url": "https://svs.gsfc.nasa.gov/12218/",
            "result_type": "Produced Video",
            "release_date": "2016-04-28T12:00:00-04:00",
            "title": "Fermi Helps Link a Cosmic Neutrino to a Blazar Outburst",
            "description": "NASA Goddard scientist Roopesh Ojha explains how Fermi and TANAMI uncovered the first plausible link between a blazar eruption and a neutrino from deep space. Credit: NASA’s Goddard Space Flight CenterWatch this video on the NASA Goddard YouTube channel.Complete transcript available. || UniverseHD1845_print.jpg (1024x576) [135.3 KB] || UniverseHD1845_searchweb.png (320x180) [85.8 KB] || UniverseHD1845_web.png (180x320) [85.8 KB] || UniverseHD1845_thm.png (80x40) [6.3 KB] || UniverseHD1845.tif (1920x1080) [7.9 MB] || 12218_Fermi_Blazar_Neutrino_FINAL_appletv.webm (1280x720) [30.3 MB] || 12218_Fermi_Blazar_Neutrino_FINAL_appletv.m4v (1280x720) [138.0 MB] || 12218_Fermi_Blazar_Neutrino_FINAL_appletv_subtitles.m4v (1280x720) [138.1 MB] || 12218_Fermi_Blazar_Neutrino_H264_Good_1920x1080_2997.mov (1920x1080) [315.8 MB] || 12218_Fermi_Blazar_Neutrino.mp4 (1920x1080) [292.0 MB] || 12218_Fermi_Blazar_Neutrino_SRT_Captions.en_US.srt [4.8 KB] || 12218_Fermi_Blazar_Neutrino_SRT_Captions.en_US.vtt [4.8 KB] || 12218_Fermi_Blazar_Neutrino_FINAL_youtube_hq.mov (1920x1080) [1.3 GB] || 12218_Fermi_Blazar_Neutrino_FINAL_lowres.mp4 (480x272) [38.6 MB] || 12218_Fermi_Blazar_Neutrino_H264_Best_1920x1080_2997.mov (1920x1080) [2.3 GB] || 12218_Fermi_Blazar_Neutrino_ProRes_1920x1080_2997.mov (1920x1080) [3.6 GB] || ",
            "hits": 129
        },
        {
            "id": 11563,
            "url": "https://svs.gsfc.nasa.gov/11563/",
            "result_type": "Produced Video",
            "release_date": "2014-06-10T10:00:00-04:00",
            "title": "Black Hole 'Batteries' Keep Blazars Going and Going",
            "description": "Astronomers studying two classes of black-hole-powered galaxies monitored by NASA's Fermi Gamma-ray Space Telescope have found evidence that they represent different sides of the same cosmic coin. By unraveling how these objects, called blazars, are distributed throughout the universe, the scientists suggest that apparently distinctive properties defining each class more likely reflect a change in the way the galaxies extract energy from their central black holes.Active galaxies possess extraordinarily luminous cores powered by black holes containing millions or even billions of times the mass of the sun. As gas falls toward these supermassive black holes, it settles into an accretion disk and heats up. Near the brink of the black hole, through processes not yet well understood, some of the gas blasts out of the disk in jets moving in opposite directions at nearly the speed of light.  Blazars are the highest-energy type of active galaxy and emit light across the spectrum, from radio to gamma rays.  Astronomers think blazars appear so intense because they happen to tip our way, bringing one jet nearly into our line of sight.Astronomers have identified two models in the blazar line. One, known as flat-spectrum radio quasars (FSRQs), show strong emission from an active accretion disk, much higher luminosities, smaller black hole masses and lower particle acceleration in the jets. The other, called BL Lacs, are totally dominated by the jet emission, with the jet particles reaching much higher energy and the accretion disk emission either weak or absent.Large galaxies grew out of collisions and mergers with many smaller galaxies, and this process occurs with greater frequency as we look back in time. These collisions provided plentiful gas to the growing galaxy and kept the gas stirred up so it could more easily reach the central black hole, where it piled up into a vast, hot, and bright accretion disk like those seen in \"gas-guzzling\" FSRQs. Some of the gas near the hole powers a jet while the rest falls in and gradually increases the black hole's spin.As the universe expands and the density of galaxies decreases, so do galaxy collisions and the fresh supply of gas they provide to the black hole. The accretion disk becomes depleted over time, but what's left is orbiting a faster-spinning and more massive black hole. These properties allow BL Lac objects to maintain a powerful jet even though relatively meager amounts of material are spiraling toward the black hole.In effect, the energy of accretion from the galaxy's days as an FSRQ becomes stored in the increasing rotation and mass of its black hole, which acts much like a battery. When the gas-rich accretion disk all but disappears, the blazar taps into the black hole's stored energy that, despite a lower accretion rate, allows it to continue operating its particle jet and producing high-energy emissions as a BL Lac object. || ",
            "hits": 94
        },
        {
            "id": 11482,
            "url": "https://svs.gsfc.nasa.gov/11482/",
            "result_type": "Produced Video",
            "release_date": "2014-02-19T11:00:00-05:00",
            "title": "The Cloudy Cores of Active Galaxies",
            "description": "At the hearts of most big galaxies, including our own Milky Way, there lurks a supermassive black hole weighing millions to billions of times the sun's mass. As gas falls toward a supermassive black hole, it gathers into a so-called accretion disk and becomes compressed and heated, ultimately emitting X-rays. The centers of some galaxies produce unusually powerful emission that exceeds the sun's energy output by billions of times. These are active galactic nuclei, or AGN.Using data from NASA's Rossi X-ray Timing Explorer (RXTE) satellite, an international team has uncovered a dozen instances where X-ray signals from active galaxies dimmed as a result of a cloud of gas moving across our line of sight. The new study triples the number of cloud events previously identified in the 16-year archive.The study is the first statistical survey of the environments around supermassive black holes and is the longest-running AGN-monitoring study yet performed in X-rays. Scientists determined various properties of the occulting clouds, which vary in size and shape but average 4 billion miles (6.5 billion km) across – greater than Pluto's distance from the sun — and twice the mass of Earth. They orbit a few light-weeks to a few light-years from the black hole. || ",
            "hits": 120
        },
        {
            "id": 11342,
            "url": "https://svs.gsfc.nasa.gov/11342/",
            "result_type": "Produced Video",
            "release_date": "2013-08-21T13:00:00-04:00",
            "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. || ",
            "hits": 166
        },
        {
            "id": 10942,
            "url": "https://svs.gsfc.nasa.gov/10942/",
            "result_type": "Produced Video",
            "release_date": "2012-05-31T09:00:00-04:00",
            "title": "X-ray 'Echoes' Probe Habitat<br>of Monster Black Hole",
            "description": "Astronomers using data from the European Space Agency's XMM-Newton satellite have found a long-sought X-ray signal from NGC 4151, a galaxy that contains a supermassive black hole. The discovery promises a new way to unravel what's happening in the neighborhood of these powerful objects. || ",
            "hits": 103
        },
        {
            "id": 10807,
            "url": "https://svs.gsfc.nasa.gov/10807/",
            "result_type": "Produced Video",
            "release_date": "2011-08-24T13:00:00-04:00",
            "title": "NASA's Swift Satellite Spots Black Hole Devouring A Star",
            "description": "In late March 2011, NASA's Swift satellite alerted astronomers to intense and unusual high-energy flares from a new source in the constellation Draco. They soon realized that the source, which is now known as Swift J1644+57, was the result of a truly extraordinary event — the awakening of a distant galaxy's dormant black hole as it shredded and consumed a star. The galaxy is so far away that the radiation from the blast has traveled 3.9 billion years before reaching Earth. Most galaxies, including our own, possess a central supersized black hole weighing millions of times the sun's mass. According to the new studies, the black hole in the galaxy hosting Swift J1644+57 may be twice the mass of the four-million-solar-mass black hole lurking at the center of our own Milky Way galaxy. As a star falls toward a black hole, it is ripped apart by intense tides. The gas is corralled into a disk that swirls around the black hole and becomes rapidly heated to temperatures of millions of degrees. The innermost gas in the disk spirals toward the black hole, where rapid motion and magnetism creates dual, oppositely directed \"funnels\" through which some particles may escape. Particle jets driving matter at velocities greater than 80-90 percent the speed of light form along the black hole's spin axis. In the case of Swift J1644+57, one of these jets happened to point straight at Earth.Theoretical studies of tidally disrupted stars suggested that they would appear as flares at optical and ultraviolet energies. The brightness and energy of a black hole's jet is greatly enhanced when viewed head-on. The phenomenon, called relativistic beaming, explains why Swift J1644+57 was seen at X-ray energies and appeared so strikingly luminous. When first detected on March 28, the flares were initially assumed to signal a gamma-ray burst, one of the nearly daily short blasts of high-energy radiation often associated with the death of a massive star and the birth of a black hole in the distant universe. But as the emission continued to brighten and flare, astronomers realized that the most plausible explanation was the tidal disruption of a sun-like star seen as beamed emission. || ",
            "hits": 271
        },
        {
            "id": 10795,
            "url": "https://svs.gsfc.nasa.gov/10795/",
            "result_type": "Produced Video",
            "release_date": "2011-06-10T14:00:00-04:00",
            "title": "Nearby Galaxy Boasts Two Monster Black Holes, Both Active",
            "description": "A study using NASA's Swift satellite and the Chandra X-ray Observatory has found a second supersized black hole at the heart of an unusual nearby galaxy already known to be sporting one. The galaxy, which is known as Markarian 739 or NGC 3758, lies 425 million light-years away toward the constellation Leo. Only about 11,000 light-years separate the two cores, each of which contains a black hole gorging on infalling gas. Astronomers refer to galaxy centers exhibiting such intense emission as active galactic nuclei (AGN). Yet as common as monster black holes are, only about one percent of them are currently powerful AGN. Binary AGN are rarer still: Markarian 739 is only the second identified within half a billion light-years.Many scientists think that disruptive events like galaxy collisions trigger AGN to switch on by sending large amounts of gas toward the black hole. As the gas spirals inward, it becomes extremely hot and radiates huge amounts of energy. || ",
            "hits": 79
        },
        {
            "id": 10698,
            "url": "https://svs.gsfc.nasa.gov/10698/",
            "result_type": "Produced Video",
            "release_date": "2011-01-20T09:00:00-05:00",
            "title": "NASA's Swift Finds 'Missing' Active Galaxies",
            "description": "Most large galaxies contain a giant central black hole. In an active galaxy, matter falling toward the supermassive black hole powers high-energy emissions so intense that two classes of active galaxies, quasars and blazars, rank as the most luminous objects in the universe. Thick clouds of dust and gas near the central black hole screens out ultraviolet, optical and low-energy (or soft) X-ray light. Although there are many different types of active galaxy, astronomers explain the different observed properties based on how the galaxy angles into our line of sight. We view the brightest ones nearly face on, but as the angle increases, the surrounding ring of gas and dust absorbs increasing amounts of the black hole's emissions. || ",
            "hits": 160
        },
        {
            "id": 10549,
            "url": "https://svs.gsfc.nasa.gov/10549/",
            "result_type": "Produced Video",
            "release_date": "2010-05-26T10:00:00-04:00",
            "title": "Swift Survey Finds 'Smoking Gun' of Black Hole Activation",
            "description": "Astronomers using X-ray data from an ongoing survey by NASA's Swift satellite have solved a decades-long mystery. Why, when most galaxies host giant black holes in their centers, do only about one percent of them emit vast amounts of energy? The new findings confirm that the black holes \"light up\" when galaxies collide — and may offer insight into the future behavior of the black hole in our own galaxy. The intense emission from galaxy centers, or nuclei, arises near a supermassive black hole containing between a million and a billion times the sun's mass. Giving off as much as 10 billion times the sun's energy, some of these active galactic nuclei (AGN) — a class that includes quasars and blazars — are the most luminous objects in the universe. || ",
            "hits": 84
        },
        {
            "id": 20135,
            "url": "https://svs.gsfc.nasa.gov/20135/",
            "result_type": "Animation",
            "release_date": "2008-04-16T00:00:00-04:00",
            "title": "Gamma Rays in Active Galactic Nuclei",
            "description": "This animation shows how gamma rays possibly form in Active Galactic Nuclei. || ",
            "hits": 85
        }
    ]
}