WASHINGTON: Scientists have for the first time found that a dormant volcano - a supermassive black hole - lying at the heart of our Milky Way galaxy last erupted two million years ago.
Astronomers have long suspected such an outburst occurred, but this is the first time it has been dated.
The evidence comes from a lacy filament of gas, mostly hydrogen, called the Magellanic Stream. This trails behind our galaxy's two small companion galaxies, the Large and Small Magellanic Clouds.
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