Sunday, 25 September 2016

Snappy star goes through two stages of evolution in just 45 years

This image of SAO 244567 at the heart of the Stingray Nebula was taken with the ...

Stars go through heating, contracting, expanding, and cooling, but these stages of stellar evolution usually play out over millions of years, making it unusual for scientists to see predictions confirmed in their own lifetime. But 2,700 light years from Earth, in the heart of the Stingray Nebula, a small star has allowed astronomers to observe something incredible – a dramatic contracting and heating phase followed by a rapid rebirth into a cooling, expanding star – just as astronomers predicted.

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