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Milky Way’s black hole may blow bubbles

Astronomers discover gamma ray-emitting blobs above and below the galaxy’s center

By Ron Cowen

- More than 2 years ago

The Milky Way is blowing bubbles of cosmic proportions.

BUBBLE JET Two newly discovered gamma-ray bubbles extend 25,000 light-years, or roughly one-fourth the Milky Way’s diameter, above and below the plane of the galaxy, as shown in this illustration.