Mysterious 'Fermi Bubbles' may be the result of black hole indigestion 6 million years ago

Twin shock waves produced by the galaxy’s central black hole could have inflated the gargantuan Fermi Bubbles about 6 million years ago, a new study suggests. Source: Space.com Mysterious 'Fermi Bubbles' may be the result of black hole indigestion 6 million years ago