A vast, flat sheet of dark matter may solve the long-standing mystery of why our neighboring galaxy Andromeda is speeding ...

A new composite image of the Andromeda Galaxy is offering an unprecedented view of our closest spiral galactic neighbor. Composed by NASA and international space partners, the image combines data from ...

Most of the universe is slipping away from the Milky Way, carried outward as space itself expands. Yet one giant neighbor is bucking the trend, racing straight at us while almost every other major ...

A new composite image of the Andromeda Galaxy is offering an unprecedented view of our closest spiral galactic neighbor. Composed by NASA and international space partners, the image combines data from ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: Gianluca Masi, Virtual Telescope Project, Background: NASA, ESA and the Hubble Heritage ...

The Andromeda galaxy, left, is about to collide with part of the Milky Way, as seen from Earth, in a hypothetical merger scenario. Credit: NASA illustration "Based on the best available data, the fate ...

CAPE CANAVERAL, Fla. (AP) - It turns out that looming collision between our Milky Way and Andromeda galaxies might not happen after all. Astronomers reported Monday that the probability of the two ...

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A family portrait of the Andromeda galaxy and its orbiting dwarf satellites raises questions about how galaxies evolve.