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1 vote

If a supernova explodes all it's comets into space, can they reach a big number of star systems?

I queried the phys forum for some maths, and found evidence from the 1987A supernova. Some studies suggest that the material at 1-2ly from the supernova is at millions of degrees, some studies suggest ...
5 votes

Is the Andromeda galaxy larger than the Milky Way or not?

TLDR - things are complicated and we're confused. The article linked in the comments of the question summarizes this. It seems it's very hard to estimate the number of stars in the Milky Way since we'...

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