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Magellanic Stream

Magellanic Stream
Image from a simulation of the gas in, and streaming from, the Magellanic Clouds. Simulation by Daisuke Kawata, Chris Fluke, Sarah Maddison, and Brad Gibson, Swinburne University of Technology, Australia
The Magellanic Stream is a filament of neutral hydrogen, spanning roughly 300,000 light-years, that may have been torn out of the Magellanic Clouds by the Milky Way Galaxy some 200 million years ago. It forms an arc in the southern sky about 150 long, stretching from the region between the Magellanic Clouds and passing close to the south galactic pole.

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