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Andromeda galaxy

A merger of the Milky Way and Andromeda. Image: NASA; ESA; Z. Levay and R. van der Marel, STScI; T. Hallas; and A. Mellinger

Are our galaxy and neighboring galaxy Andromeda already touching and will collide sooner than we think?

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The large galaxy in Andromeda (M81). Photo: shutterstock

The "gamma ray burst" in the Andromeda galaxy turned out to be a false alarm

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Andromeda Galaxy and its satellite galaxies.

Small galaxies also collide with each other, and are not only 'destroyed' by the large ones

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Astronomers have observed a planet in the Andromeda galaxy

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