File:Gamma-ray Bubbles.ogv
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Original file (Ogg multiplexed audio/video file, Theora/Vorbis, length 1 min 32 s, 960 × 540 pixels, 1.11 Mbps overall, file size: 12.22 MB)
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[edit]DescriptionGamma-ray Bubbles.ogv |
English: 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. However, by processing the data, a group of scientists was able to bring these unexpected structures into sharp relief. Each lobe is 25,000 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. |
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Source | Goddard Multimedia |
Author | NASA/Goddard Space Flight Center |
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This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.) | ![]() |
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current | 13:23, 1 March 2012 | 1 min 32 s, 960 × 540 (12.22 MB) | Originalwana (talk | contribs) | {{Information |Description ={{en|1=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 bel... |
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