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Stellar Astrophysics Centre at the University of Aarhus

Hot stars with an unknown past promise new understandings also of the Sun

1 Oct 2019, 09:44 UTC
Hot stars with an unknown past promise new understandings also of the Sun ESO

Once upon a very distant future, when it has used up the Hydrogen in its core, our Sun will inflate and turn into a red giant star. This phase of the life of the Sun and all other stars like it up to twice its mass is quite short - relatively, and it ends with at bang - the core goes through a "Helium core flash." These flashes have been predicted for the last 50 years by theoretical astrophysicists, but until now it has never been observed. A recent paper in Nature Astronomy Letters of 30 September 2019 indicates that it may happen soon, though. 

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