Andromeda has gained an exceptionally faint companion that may trace its origin back to the early universe. The newly ...
The Andromeda galaxy is surrounded by a constellation of dwarf galaxies that are arranged in a highly lopsided manner. Analysis of cosmological simulations reveals that this degree of asymmetry is ...
Located 2.5 million light-years away, the majestic Andromeda galaxy appears to the naked eye as a faint, spindle-shaped object roughly the angular size of the full moon. What backyard observers don't ...
Our Milky Way galaxy and Andromeda are destined to collide with each other in roughly 5 billion years, but the galaxies may already be exchanging stars. A new study suggests that hypervelocity ...