We see that all the hydrogen gas in this region of the Galaxy is disturbed, with many smaller outflows closer to the plane of the Galaxy and then a giant plume of gas that forms a sort of cap on the whole thing.

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This giant gas bubble contains about a million times more mass than the Sun and the energy powering its outflow is equal to about 100 supernova explosions.

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This giant gas bubble contains about a million times more mass than the Sun, and the energy powering its outflow is equal to about 100 supernova explosions.

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One theoretical model shows that young stars could power an outflow that matches what we see very closely.

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This would shut down the formation of new stars in the galaxy.

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For a bubble this size, this is very close.

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