Dead stars in the Milky Way’s companion galaxy cause a cocoon of gamma rays

Dead stars in the Milky Way’s companion galaxy cause a cocoon of gamma rays

The mysterious emissions of ultrabright gamma rays in the giant bubbles blown by our galaxy may finally have an explanation.

The researchers used data from the Gaia and Closed space telescopes to search through the Fermi Bubbles, a pair of colossal hourglass-shaped bubbles that extend from the poles of the Milky Way and span 50,000 light-years, to trace the source of the very bright gamma-ray emission spots.

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