Andromeda Galaxy's Bright Black Hole
A Hubble Space Telescope optical image of our nearest neighbor galaxy, Andromeda (M31), with an inset X-ray image of the active center made with the XMM-Newton observatory. The newly discovered ultraluminous X-ray source is highlighted.
Milky Way and Andromeda Galaxy Collision
An artist's rendition of the collision between the Milky Way and the Andromeda galaxy. The results, however, may be more atypical than previously expected.
WISE Images of Andromeda, Fornax Galaxies
WISE images of our neighboring spiral galaxy, Andromeda (left) and the central region of a nearby cluster of elliptical galaxies, the Fornax cluster (right). Images released February 17, 2010.
Portion of the Andromeda Galaxy
A Hubble Space Telescope image of a small portion of the Andromeda galaxy.
Dwarf Galaxies Around Andromeda Galaxy
This composite shows the alignment of the satellite dwarf galaxies of the Andromeda galaxy, in relation to the view that we see from Earth (the top left panel shows a true color image of the center of the Andromeda galaxy taken with the Canada France Hawaii Telescope). Image released on Jan. 2, 2012.
Andromeda Revealed: New Closeups of Our Galactic Neighbor
The top image in this infrared composite shot from NASA's Spitzer Space Telescope highlights the contrast between the galaxy's choppy waves of dust (red) and smooth sea of older stars (blue). The panels below the main image show the galaxy's dust (left) and older stars (right) separately.
Andromeda Galaxy Five Time Bigger Than Thought
Andromeda, as it looks if observed from Seattle, WA at 8 pm PST on Jan. 7, 2007. The discovery of halo stars located far from Andromeda's center suggest our nearest galactic neighbor is much bigger than previously thought.
A Trio of Galaxies
The Andromeda galaxy, M31, with satellite galaxies M32 (centre left) and M110 (lower right).
Andromeda, Neighbor Galaxy of the Milky Way
The Andromeda Galaxy, M31, is the nearest spiral galaxy to our own Milky Way.
Hydrogen Clouds Between the Andromeda Galaxy M31 and Triangulum Galaxy M33
This combined graphic shows a high-resolution image (inset) from the Green Bank Telescope of recently discovered hydrogen clouds between the Andromeda Galaxy M31 (upper right) and Triangulum Galaxy M33 (bottom left). Image released May 8, 2013.