Today: Sat 18 Nov 2017

An astronomical cannibal up close

At first glance is may look like a random orange blob, but in fact a historic image revealing one of the biggest stars ever seen. It shows Betelgeuse, one of the largest stars known to astronomers, with a radius about 1,400 times larger than that of the Sun.

It is a red supergiant on the verge of becoming a supernova, and astronomers have studied it to unlock the secrets of red supergiants.

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