Astronomers have found a very weird star that appears to be split down the middle with helium on one side and hydrogen on the other.
stronger. White dwarfs are made primarily of hydrogen and helium, so the lighter hydrogen would naturally float to the surface of the side with no convection, whereas on the other side the more abundant helium would bubble up to the top.Voyage across the galaxy and beyond with our space newsletter every month.
The fact that we have searched so much of the cosmos and only found one of these stars means that these objects are probably. It also took an incredible coincidence for us to be able to identify it – the axis of rotation just happens to be perpendicular to the divide between the helium face and the hydrogen face, and we just happen to be positioned face-on to the star.
Now that they have had this stroke of luck, the researchers hope to take more detailed data on Janus to figure out how exactly its internal dynamics work. This star could be the key that unlocks the explanation of this strange phase of
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