10 Interesting Facts About the Milky Way

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2The Galactic Center Is Blowing Hot Air

The Milky Way is blowing massive bubbles of extremely hot gas and energetic particles. Stretching far above and below the galactic plane, these so-called Fermi bubbles balloon straight out of the galaxy’s center, fueled by a wind blowing at two million miles an hour.

Unknown until 2010, it’s not entirely clear why the bubbles exist, but scientists think they could be linked to the frenzy of star death and formation in the region around Sagittarius A*.