Now astronomers want to know: what makes a star a star?
In the vicinity of the coldest known object out there
Close encounters of the stellar kind
Later this year, the black hole in our own galaxy will do the same, munching on a passing gas cloud.
It's one of the closest stars we've seen, but it's so cool we didn't notice it before
ESA's COROT observatory discovers two more exoplanets, plus a strange new object astronomers can't quite explain
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