A spiral galaxy like the Milky Way, Andromeda contains a concentrated bulge of matter in the middle, surrounded by a disk of gas, dust, and stars and an immense halo.
When to look for the Andromeda Galaxy. To find the Andromeda galaxy via Cassiopeia, look for the star Schedar. Find the Andromeda galaxy using the Great Square of Pegasus. Globular One or G1 has several stellar populations and a structure too massive for an ordinary globular.
Astronomers estimate that Andromeda will collide with the Milky Way in 4 billion years, with the merger concluding 6 billion years from now. From mid-northern latitudes, you can see M31 — also called the Andromeda galaxy — for at least part of every night, all year long.
Black hole activities within Andromeda also came under scrutiny. Its diameter is thought to be about million light-years.
Alternative spiral structures have been proposed such as a single spiral arm  or a flocculent  pattern of long, filamentary, and thick spiral arms. Although several dozen minor galaxies lie closer to our Milky Way, the Andromeda galaxy is the closest large spiral galaxy to ours.
Both are somelight-years across, containing enough mass to make billions of stars. Binoculars will clearly reveal its shape. The image included 7, exposures taken over pointings of the telescope. The image revealed more than million stars within the galaxy, as well as dust structures and other features.
Scientists tracked down a probable pulsar — a dead star that spins rapidly — in Andromeda in Find the Andromeda galaxy using the constellation Cassiopeia. If you know approximately where to look for this hazy smudge in your night sky — and your sky is very dark — you might pick out the galaxy just by looking for it.
See how the star Schedar points to the galaxy? If you live in a more populated place, you may have more trouble. Nucleus[ edit ] Hubble image of the Andromeda Galaxy core showing possible double structure.
The Andromeda Galaxy M These stars belong to the constellation Andromeda the Princess. Additional reporting by Elizabeth Howell, Space.
In the illustration above, see how the star Schedar points to the galaxy?
Astronomers have discovered that our Local Group is on the outskirts of a giant cluster of several thousand galaxies — which astronomers call the Virgo Cluster. View larger View zoomable image.Jul 23, · The Andromeda galaxy is our closest galactic neighbor, and it apparently has been hiding a dark past.
Scientists from the University of Michigan discovered that this sinister figure cannibalized. The Andromeda galaxy is the closest big galaxy to our Milky Way.
It’s a spiral galaxy, like ours. At million light-years, it’s the most. The Andromeda Galaxy, spanning approximatelylight-years, is the largest galaxy in our Local Group, which is also home to the Triangulum Galaxy and other minor galaxies.
The Andromeda Galaxy's mass is estimated to be around times that of the Milky Way Galaxy. The Andromeda galaxy, our Milky Way's closest neighbor, is the most distant object in the sky that you can see with your unaided eye — but only on a clear night from a location with a very dark.Download