The impending merger of the two galaxies hints at what might be in store for the Milky Way and the Andromeda galaxy if and ...

Messier 31 is located 2.5 million light-years away from Earth and was a much bigger target in the sky than the galaxies Hubble routinely observes. The post Stunning new panorama of Andromeda ...

A Hubble Space Telescope study takes a close look at the dwarf galaxies surrounding Andromeda. Surrounding the Andromeda galaxy, three dozen tiny galaxies aren't behaving the way scientists expected.

Astronomers deployed the Hubble Space Telescope over the course of a decade to conduct 600 separate observations to produce an extraordinary mosaic of the great spiral galaxy. Astronomer John S ...

The Andromeda Galaxy, the Milky Way's closest galactic neighbor, glows brightly in a new Hubble Space Telescope image with swathes of ionized gas that fuel star formation.

A photomosaic panorama of the Andromeda galaxy assembled over 10 years by the Hubble Space Telescope. The stunning mosaic captures the glow of 200 million stars, a fraction of Andromeda’s population.

A detailed study of the motions of different stellar populations in the disk of the Andromeda galaxy has found striking differences from our own Milky Way, suggesting a more violent history of mergers ...

Hubble's sharp imaging capabilities can resolve more than 200 million stars in the Andromeda galaxy, detecting only stars brighter than our Sun. They look like grains of sand across the beach.

Before then, the orthodox cosmological view was that the Milky Way encompassed the entire known universe, and that Andromeda had to be part of it as a result. Hubble's estimate that M31 was 2.5 ...

Scientists using NASA’s Hubble Space Telescope have discovered that the immense halo of gas enveloping the Andromeda galaxy, our nearest massive galactic neighbor, is about six times larger and ...

The Hubble Space Telescope has generated the most comprehensive survey yet of the Andromeda galaxy, the nearest galactic neighbor to the Milky Way. The new mosaic of about 2.5 billion pixels ...

Hubble was in the process of gleaning clues about dark matter. New images released by NASA's Hubble Space Telescope are of the Pegasus Dwarf spheroidal galaxy, also known as Andromeda VI. Pegasus ...