The Milky Way Galaxy May Be Way Less Massive Than We Thought It Was

Surprise! Our home galaxy is no pipsqueak, but it isn't nearly as massive as scientists used to think.

Astronomers often refer to the neighboring Andromeda galaxy, which is around 2.6 million light-years away from us, as the "twin galaxy" of our own Milky Way. But a new study indicates that the two galaxies are quite different when it comes to mass. The research, from an international team of scientists, shows that the Milky Way is about half as massive as Andromeda.

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