Astronomers have found evidence of an ancient outburst from the supermassive black hole at the heart of the Milky Way.
Sign up for CNN's Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. There is a slumbering giant at the heart of our galaxy and occasionally, it wakes up and has an outburst.
Astronomers have found evidence of this activity from the supermassive black hole at the heart of the Milky Way. The black hole, which is 4 million times the mass of our sun, has the remains of a blowtorch-like jet of material from an outburst that occurred several thousand years ago. As black holes use their gravitational pull to tug material inward, interstellar gas and dust swirls into something called an accretion disk around the black hole.
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