A theory proposed in 2023 suggests that the Milky Way and Andromeda are so big that there’s hardly any space between them. The evidence is 200 ancient stars in the Milky Way’s halo ...
neighboring Andromeda galaxy, as it will unfold over ... the gas glowed 100,000 light years into space. “We found it everywhere we looked, which was exciting and kind of surprising,” said ...
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