{
    "count": 10,
    "next": null,
    "previous": null,
    "results": [
        {
            "id": 20122,
            "url": "https://svs.gsfc.nasa.gov/20122/",
            "result_type": "Animation",
            "release_date": "2012-02-25T00:00:00-05:00",
            "title": "Fermi's LAT Instrument",
            "description": "Fermi's Large Area Telescope (LAT) detects particles produced in a physical process known as pair production that epitomizes Einstein's famous equation, E=mc2. When a gamma ray, which is pure energy (E), slams into a layer of tungsten in one of the tracking towers that compose the LAT, it creates mass (m) in the form of a pair of subatomic particles,  an electron and its antimatter counterpart, a positron. Several layers of high-precision silicon detectors track the particles as they move through the instrument. The direction of the incoming gamma ray is determined by projecting the particle paths backward. The particles travel through the trackers until they reach a separate detector called a calorimeter, which absorbs and measures their energies. The LAT produces gamma-ray images of astronomical objects, while also determining the energy of each detected gamma ray. || ",
            "hits": 107
        },
        {
            "id": 10165,
            "url": "https://svs.gsfc.nasa.gov/10165/",
            "result_type": "B-Roll",
            "release_date": "2007-09-17T00:00:00-04:00",
            "title": "GLAST LAT Testing - B-Roll",
            "description": "The GLAST LAT (Large Area Telescope) was tested extensively during the summer of 2006 at the U.S. Naval Research Laboratory in Washington, DC. The NRL also contributed to the GLAST project by managing the construction of the LAT Calorimeter. || ",
            "hits": 30
        },
        {
            "id": 10169,
            "url": "https://svs.gsfc.nasa.gov/10169/",
            "result_type": "B-Roll",
            "release_date": "2007-09-17T00:00:00-04:00",
            "title": "GLAST LAT Integration - B-Roll",
            "description": "In fall of 2006, the LAT was shipped to the General Dynamics facility in Arizona for integration onto the spacecraft bus. The General Dynamics spacecraft bus provides the power, data, and pointing resources that will enable the LAT to perform its survey of the Universe. Subsequent to the mechanical integration, the command, data, and power interfaces between the instrument and the spacecraft were tested rigorously to insure the compatibility of this spaceflight hardware that had been manufactured all around the globe. || ",
            "hits": 22
        },
        {
            "id": 10172,
            "url": "https://svs.gsfc.nasa.gov/10172/",
            "result_type": "Produced Video",
            "release_date": "2007-09-17T00:00:00-04:00",
            "title": "GLAST Promo Video",
            "description": "NASA's Gamma-ray Large Area Space Telescope (GLAST) is a powerful space observatory that will open a wide window on the universe. Gamma rays are the highest-energy form of light and the gamma-ray sky is spectacularly different from the one we perceive with our own eyes. With a huge leap in all key capabilities, GLAST data will enable scientists to answer persistent questions across a broad range of topics, including supermassive black-hole systems, pulsars, the origina of cosmic rays, and searches for signals new physics. NASA's GLAST mission is an astrophysics and particle physics partnership, developed in collaboration with the U.S. Department of Energy, along with important contributions from academic institutions and partners in France, Germany, Italy, Japan, Sweden, and the U.S. || ",
            "hits": 31
        },
        {
            "id": 20119,
            "url": "https://svs.gsfc.nasa.gov/20119/",
            "result_type": "Animation",
            "release_date": "2007-09-14T00:00:00-04:00",
            "title": "The GLAST (Fermi) Spacecraft in Orbit",
            "description": "GLAST will be launched into a circular orbit around the Earth at an altitude of about 560 km (350 miles). At that altitude, the observatory will circle Earth every 90 minutes. In sky-survey mode, GLAST will be able to view the entire sky in just two orbits, or about 3 hours. Because gamma rays in the GLAST's energy band are unable to penetrate the Earth's atmostphere, it is essential that GLAST perform its observations from space. || ",
            "hits": 41
        },
        {
            "id": 20120,
            "url": "https://svs.gsfc.nasa.gov/20120/",
            "result_type": "Animation",
            "release_date": "2007-09-14T00:00:00-04:00",
            "title": "360 Degrees of GLAST",
            "description": "GLAST will carry two instruments: the Large Area Telescope (LAT) and the GLAST Burst Monitor (GBM). The LAT is GLAST's primary instrument and consists of four components: the Tracker, the Calorimeter, the Anticoincidence Detector (ACD), and the Data Acquisition System (DAQ). These instrument components working together will detect gamma rays by using Einstein's famous equation (E=mc(squared) in a technique known as pair production. The GLAST Burst Monitor is a complementary instrument and consists of low-energy detectors, high-energy detectors, and data processing unit. The GBM can see all directions at once, except for the area where Earth blocks its view. When the GBM detects a bright gamma-ray burst, it immediately sends a signal to the LAT to observe that area of the sky. || ",
            "hits": 40
        },
        {
            "id": 20121,
            "url": "https://svs.gsfc.nasa.gov/20121/",
            "result_type": "Animation",
            "release_date": "2007-09-14T00:00:00-04:00",
            "title": "GLAST's New Window on the Universe",
            "description": "The Universe is home to numerous extoic and beautiful phenomena, some of which can generate inconceiveable amounts of energy. GLAST (Gamma-ray Large Area Telescope) will open this high-energy world as the first imaging gamma-ray observatory to survey the entire sky every day and with high sensitivity. Astronomers will gain a superior tool to study how black holes, notorious for pulling matter in, can accelerate jets of gas outward at fantastic speeds. Physicists will be able to search for signals of new fundamental processes that are inaccessable in ground-based accelerators and observatories. And scientists will have a unique opportunity to learn about the every-changing Universe at extreme energies. || ",
            "hits": 43
        },
        {
            "id": 20123,
            "url": "https://svs.gsfc.nasa.gov/20123/",
            "result_type": "Animation",
            "release_date": "2007-09-14T00:00:00-04:00",
            "title": "GLAST Launch and Deployment",
            "description": "GLAST's launch is scheduled for early 2008 from Cape Canaveral Air Station on Florida's eastern coast. GLAST will be carried on a Delta II Heavy launch vehicle, with 9 solid rocket boosters. The solids are actually from the Delta III series (hence the term 'heavy'), mounted on a Delta II. It has a 10-foot fairing and two stages. Stowed in the launch vehicle, the spacecraft is 9.2 feet (2.8 meters) high by 8.2 feet (2.5 meters) in diameter. Once deployed, GLAST becomes a little bit taller and much wider (15 meters) with the Ku-band antenna deployed and the solar arrays extended. || ",
            "hits": 31
        },
        {
            "id": 3439,
            "url": "https://svs.gsfc.nasa.gov/3439/",
            "result_type": "Visualization",
            "release_date": "2007-09-13T00:00:00-04:00",
            "title": "Simulations of the Gamma-Ray Sky",
            "description": "The Gamma-Ray Large Area Space Telescope (GLAST) will observe the sky in gamma-rays with energies between 10 million electron volts (MeV) to 300 billion electron volts (GeV) (a photon of visible light is roughly 2 electron volts). At these energies, the detectors will receive roughly 2 photons every second. At these energies, the objects visible will be active galaxies, quasars, pulsars, and gamma-ray bursts. This visualization is generated from one year of simulated photon event-lists using known sources. These event lists are used for testing the various data analysis software being developed for the project. Due to the extremely low event rate, it takes about one week of event accumulation to see structure in the sky. To generate the 600+ frames of this visualization, the event lists were box-car averaged for a duration of one week for each frame, and each frame shifted 50,000 seconds in time from the previous frame. The low angular resolution of gamma-ray detectors makes point sources appear spread out in the sky. In these maps, the color of each pixel represents the number of photons accumulated in that pixel (over an energy range of 10MeV-300GeV). Horizontally, across the center of the map, is the diffuse emission from the plane of our own Milky Way galaxy. The images are projected in galactic coordinates with a plate carrée projection so there is significant distortion with increasing latitude above the galactic disk. This emission in the galactic plane is created by pulsars and supernova remnants. Located away from this plane is emission from active galaxies and high-velocity pulsars. Occasionally, a bright spot appears which can be a gamma-ray burst or quasar in an active state. || ",
            "hits": 66
        },
        {
            "id": 20113,
            "url": "https://svs.gsfc.nasa.gov/20113/",
            "result_type": "Animation",
            "release_date": "2007-09-07T00:00:00-04:00",
            "title": "Gamma Ray Creation",
            "description": "Gamma rays are the highest-energy forms of light in the electromagnetic spectrum and they can have over a billion times the energy of the type of light visible to the human eye. Gamma rays can be created in several different ways: a high-energy particle can collide with another particle, a particle can collide and annihilate with its anti-particle, an element can undergo radioactive decay, or a charged particle can be accelerated. In this animation, we see a high-energy photon collide with a free electron, which causes the creation of a gamma-ray. || ",
            "hits": 226
        }
    ]
}