M31

Astronomers Uncover Mass Migration of Stars into Andromeda

Astronomers know that galaxies grow over time through mergers with other galaxies. We can see it happening in our galaxy.…

1 year ago

Andromeda Shredded and Consumed a Massive Galaxy About Two Billion Years Ago

According to a new study by a team from the University of Michigan, Andromeda survived a merger with a massive…

6 years ago

Messier 32 – the “Le Gentil” Dwarf Elliptical Galaxy

Located in the direction of the Andromeda Constellation is the dwarf elliptical galaxy known as "Le Gentil" (or Messier 32),…

7 years ago

The Andromeda Constellation

In the 2nd century CE, Greek-Egyptian astronomer Claudius Ptolemaeus (aka. Ptolemy) compiled a list of the then-known 48 constellations. His…

8 years ago

Dwarf Galaxies That Dance? Andromeda Observations Reveal A Larger Cosmic Mystery

What is up with these dwarf galaxies? A survey of thousands of galaxies using the Sloan Digital Sky Survey reveals…

10 years ago

Astronomers Refine Distances to our Closest Spiral-Galaxy Neighbors

M31 and M33 are two of the nearest spiral galaxies, and can form the basis for determining distances to more remote…

11 years ago

Hydrogen Clouds Discovered Between Andromeda And Triangulum Galaxies

Score another point for the National Science Foundation's Green Bank Telescope (GBT) at the National Radio Astronomy Observatory (NRAO) in…

11 years ago

Comet PANSTARRS Meets the Andromeda Galaxy — More Amazing Images

More of our readers had success in capturing the awesomeness of seeing Comet PANSTARRS encounter the Andromeda Galaxy (M31) in…

11 years ago

Lighting Up Andromeda’s Coldest Rings

Cold rings of dust are illuminated in this image taken by Herschel's Spectral and Photometric Imaging Receiver (SPIRE) instrument. Credit: ESA/NASA/JPL-Caltech/B.…

11 years ago

Galactic Close Call Leaves a Bridge of Gas

[/caption] An ancient passing between two nearby galaxies appears to have left the participants connected by a tenuous "bridge" of…

12 years ago