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Huge 'Superbubble' of Gas Blowing Out of Milky Way Astronomers using the National Science Foundation's Robert C. Byrd Green Bank Telescope (GBT) in West Virginia have discovered a huge "superbubble" of hydrogen gas rising nearly 10,000 light-years above the plane of our Milky Way Galaxy. They believe the gas may be driven by supernova explosions and the intense stellar winds from an unseen cluster of young stars in one of our Galaxy's spiral arms.
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