Our galaxy, while not small, isn't nearly as big as Andromeda. We harbor some 100 to 400 billion stars. One day, however, the two galaxies may collide, forming a giant, egg-shaped elliptical ...
"Andromeda looks like a transitional type of galaxy that's between a star-forming spiral and a sort of ellipticalgalaxy dominated by aging red stars," said Weisz. "We can tell it's got this big ...
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