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http://svs.gsfc.nasa.gov/11130

Short description: This animation tracks several gamma rays through space and time, from their emission in the jet of a distant blazar to their arrival in Fermi's Large Area Telescope (LAT). During their journey, the number of randomly moving ultraviolet and optical photons (blue) increases as more and more stars are born in the universe. Eventually, one of the gamma rays encounters a photon of starlight and the gamma ray transforms into an electron and a positron. The remaining gamma-ray photons arrive at Fermi, interact with tungsten plates in the LAT, and produce the electrons and positrons whose paths through the detector allows astronomers to backtrack the gamma rays to their source.

Date released: 1 November 2012

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http://www.youtube.com/watch?v=U_jFrWm_ers

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http://svs.gsfc.nasa.gov/vis/a010000/a010900/a010991/index.html

Short 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.

Date released: July 3, 2012

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http://www.youtube.com/watch?v=s9b0md5oGWw

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http://svs.gsfc.nasa.gov/vis/a010000/a011000/a011026/index.html

Short description: An international team of astronomers using data from NASA's Hubble Space Telescope has detected significant changes in the atmosphere of a planet located beyond our solar system. The scientists conclude the atmospheric variations occurred in response to a powerful eruption on the planet's host star, an event observed by NASA's Swift satellite.

Date released: June 28, 2012

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http://www.youtube.com/watch?v=cnE4oYcCw8g

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Short description: NASA's Wilkinson Microwave Anisotropy Probe, known as WMAP, transformed the science of cosmology by establishing the age, geometry, and contents of the universe to astonishing precision. On June 20, the Gruber Foundation recognized this accomplishment by awarding its 2012 Cosmology Prize to WMAP principal investigator Charles L. Bennett at Johns Hopkins University in Baltimore and the science team he led.

Date released: June 22, 2012

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http://www.youtube.com/watch?v=mc-wQwaUh_Q

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http://svs.gsfc.nasa.gov/vis/a010000/a011000/a011000/index.html

Short description: During a powerful solar blast in March, NASA's Fermi Gamma-ray Space Telescope detected the highest-energy light ever associated with an eruption on the sun. The discovery heralds Fermi's new role as a solar observatory, a powerful new tool for understanding solar outbursts during the sun's maximum period of activity.

Date released: June 12, 2012

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http://www.youtube.com/watch?v=M3qwNHAMJu0

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http://svs.gsfc.nasa.gov/vis/a010000/a010900/a010942/index.html

Short 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.

Date released: May 31, 2012

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http://www.youtube.com/watch?v=i5ucytz2C7I

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http://svs.gsfc.nasa.gov/vis/a010000/a010900/a010943/index.html

Short description: Scientists working with data from NASA's Fermi Gamma-ray Space Telescope have looked for signals from some of these hypothetical particles by zeroing in on 10 small, faint galaxies that orbit our own. Although no signals have been detected, a novel analysis technique applied to two years of data from the observatory's Large Area Telescope (LAT) has essentially eliminated these particle candidates for the first time.

Date released: April 31, 2012

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http://svs.gsfc.nasa.gov/10943

Short description: There's more to the cosmos than meets the eye. About 80 percent of the matter in the universe is invisible to telescopes, yet its gravitational influence is manifest in the orbital speeds of stars around galaxies and in the motions of clusters of galaxies. Yet, despite decades of effort, no one knows what this "dark matter" really is. Scientists working with data from NASA's Fermi Gamma-ray Space Telescope have looked for signals from some of these hypothetical particles by zeroing in on 10 small, faint galaxies that orbit our own. Although no signals have been detected, a novel analysis technique applied to two years of data from the observatory's Large Area Telescope (LAT) has essentially eliminated these particle candidates for the first time.

Date released: 2 April 2012

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http://www.youtube.com/watch?v=noNyWjV5IAY

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http://svs.gsfc.nasa.gov/vis/a010000/a010100/a010116/index.html

Short description: Afterschool Universe is an out-of-school-time astronomy program for middle school students that explores basic astronomy concepts through engaging hands-on activities and then takes participants on a journey through the Universe beyond the Solar System. These videos are designed for instructors using the Afterschool Universe program. They are designed to give a better understanding of the assembly, technique and layout of some of the more complicated demonstrations.

Date released: Feb. 10, 2012

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http://www.youtube.com/watch?v=dF-KhAXbV8k

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http://svs.gsfc.nasa.gov/vis/a010000/a010800/a010869/

Short description: Animation showing an X-ray hot spot in the gas around a black hole producing signals of rising frequency as the spot moved closer to the black hole. When the bullets were ejected June 3, the hot spot vanished.

Date released: Jan 10, 2012