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What do you get when a white dwarf eats a brown dwarf? A very, very energetic cosmic belch.

12 Nov 2018, 14:00 UTC
What do you get when a white dwarf eats a brown dwarf? A very, very energetic cosmic belch. ALMA (ESO/NAOJ/NRAO)/S. P. S. Eyres

In the year 1670, astronomers noticed a “new star” in a part of the sky that would later be known as the constellation Vulpecula (the fox). This is a region rich with stars, but few are very bright. This new star, though, grew in brightness until it reached a magnitude of about 3 (a little bit fainter than the stars in the Big Dipper), then faded away.

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