NASA | Terrestrial Gamma-ray Flashes Create Antimatter

NASA | Terrestrial Gamma-ray Flashes Create Antimatter Tube. Duration : 2.78 Mins.

NASA's Fermi Gamma-ray Space Telescope has detected beams of antimatter launched by thunderstorms. Acting like enormous particle accelerators, the storms can emit gamma-ray flashes, called TGFs, and high-energy electrons and positrons. Scientists now think that most TGFs produce particle beams and antimatter. This video is public domain and can be downloaded at: svs.gsfc.nasa.gov Like our videos? Subscribe to NASA's Goddard Shorts HD podcast: svs.gsfc.nasa.gov Or find NASA Goddard Space Flight Center on facebook: www.facebook.com Or find us on Twitter: twitter.com

Tags: Scott, Wiessinger, NASA, Goddard, antimatter, fermi, lightning, thunderstorms, satellite, astrophysics, gamma, ray, electron

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NASA | Fermi discovers giant gamma-ray bubbles in the Milky Way

NASA | Fermi discovers giant gamma-ray bubbles in the Milky Way Tube. Duration : 1.55 Mins.

Using data from NASA's Fermi Gamma-ray Space Telescope, scientists have discovered a gigantic, mysterious structure in our galaxy. This never-before-seen feature looks like a pair of bubbles extending above and below our galaxy's center. But these enormous gamma-ray emitting lobes aren't immediately visible in the Fermi all-sky map. By processing the data, a group of scientists was able to bring these unexpected structures into sharp relief. Each lobe is 25000 light-years tall and the whole structure may be only a few million years old. Within the bubbles, extremely energetic electrons are interacting with lower-energy light to create gamma rays, but right now, no one knows the source of these electrons. Are the bubbles remnants of a massive burst of star formation? Leftovers from an eruption by the supermassive black hole at our galaxy's center? Or or did these forces work in tandem to produce them? Scientists aren't sure yet, but the more they learn about this amazing structure, the better we'll understand the Milky Way. This video is public domain and can be downloaded at: svs.gsfc.nasa.gov Like our videos? Subscribe to NASA's Goddard Shorts HD podcast: svs.gsfc.nasa.gov Or find NASA Goddard Space Flight Center on facebook: www.facebook.com Or find us on Twitter: twitter.com

Tags: NASA, Goddard, Fermi, gamma-ray, space, telescope, Scott Wiessinger

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