A Nearby OB Association (IMAGE)

Washington University in St. Louis

A Nearby OB Association

Caption

Vast bubble in the Large Magellanic Cloud, a satellite galaxy to the Milky Way visible from the Southern Hemisphere, was formed by the explosive death of one or more of the cluster of massive stars inside the bubble. Cosmic rays reaching Earth are created and accelerated by similar explosions.

Credit

Gemini South Telescope in Chile. Composite by Travis Rector of the University of Alaska Anchorage

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