On Dec. 15, 1612, the Andromeda galaxy was seen through a telescope for the first time by a German astronomer named Simon Marius. [‘On This Day in Space’ Video Series on Space.com] The Andromeda ...

A head-on collision of the Andromeda Galaxy with the Milky Way is coming, according to astronomers! The next clear late November night you can see Andromeda, which is literally getting bigger second ...

Eros appears to buzz the Andromeda Galaxy, courtesy of a livestream hosted by the Virtual Telescope Institute in partnership with the Asteroid Foundation. Sunday's livestream is due to start at 3 p.m.

The Andromeda Galaxy is revealed in unprecedented detail in four archive observations from the NASA/ESA Hubble Space Telescope. They show stars and structure in the galaxy’s disk, the halo of stars ...

A close-up view of a prodigious number of stars in the Andromeda galaxy. Credit: NASA / ESA / B. Williams (U. of Washington) The Andromeda galaxy is a colossal marvel in our sky, hosting over 1 ...

A magnificent cloud of diffuse halo of plasma surrounding our galactic neighbor, Andromeda, was recently mapped by astronomers using the Hubble Space Telescope. This envelope of electrically-charged ...

This video by Ian Lauer is an excellent accessible explanation of the basics of astrophotography as he runs through the ...

Did you know that you can see the closest spiral galaxy next to our own in the sky? While binoculars and telescopes will offer much better views, it’s still possible to see it with your naked eye if ...

On November 30, the near-Earth asteroid Eros will pass within 2 degrees of the Andromeda Galaxy's core, offering a rare celestial spectacle.

As the crisp autumn air rolls in, October presents a prime opportunity for stargazers to witness the beauty of the Andromeda Galaxy (M31). Just as the Milky Way’s closest neighbor climbs high above ...

Astronomers have uncovered striking new evidence for a mass migration of stars into the Andromeda Galaxy. Intricate patterns in the motions of stars reveal an immigration history very similar to that ...

The large galaxies present in the current Universe weren’t always so big. Evidence indicates that they were built up over time, largely by collisions with other galaxies. These collisions have left ...