Our neighbourhood galaxy - Andromeda

                   The galaxy of Andromeda

Andromeda Galaxy Facts

Andromeda Galaxy

  • While Andromeda is the largest galaxy in the Local Cluster it may not be the most massive. The Milky May is thought to contain more dark matter, which could make it much more massive.
  • Since it is the nearest spiral galaxy to us, astronomers use the Andromeda Galaxy to understand the origin and evolution of such galaxies.
  • The Andromeda Galaxy is approaching the Milky Way at approximately 100 to 140 kilometres per second.
  • The Andromeda Galaxy has a very crowded double nucleus. Not only does it have a massive star cluster right at its heart, but it also has at least one supermassive black hole hidden at the core.
  • The spiral arms of the Andromeda Galaxy are being distorted by gravitational interactions with two companion galaxies, M32 and M110.
  • The Andromeda Galaxy has at least two spiral arms, plus a ring of dust that may have come from the smaller galaxy M32. Astronomers think that it may have interacted more closely with Andromeda several hundred million years ago, when M32 plunged through the heart of its larger neighbor.
  • There are at least 450 globular clusters orbiting in and around the Andromeda Galaxy. Some of them are 
  • among the most densely populated globulars ever seen.
  • The Andromeda Galaxy is the most distant object you can spot with the naked eye. You need a good spot away from bright lights in order to see it.
  • Interesting Andromeda Galaxy Facts:
    The Andromeda Galaxy is bigger than the Milky Way Galaxy.
    During the 17th century, astronomers thought that Andromeda was a portion of the Milky Way.
    Because of the similarities, observations of the Andromeda are how astronomers make assumptions about the Milky Way.
    The Andromeda Galaxy and the Milky Way Galaxy are being drawn closer and closer together.
    Andromeda is 260,000 light years long.
    Although the Milky Way has more mass, Andromeda is considered to be the largest galaxy.
    The Andromeda Galaxy is a part of a cluster of galaxies called the Local Group.
    The Milky Way will merge with Andromeda in roughly 5 billion years.
    The Andromeda Galaxy is located inside of the Andromeda Constellation which can be seen in the northern sky.
    Andromeda is also called Messier 31 or M31 and the Great Andromeda Nebula by astronomers.
    The Andromeda Galaxy gets its name from the mythological princess Andromeda.
    There are roughly one trillion stars in the Andromeda Galaxy.
    Scientists believe that about 5 to 9 million years ago small galaxies collided and created Andromeda.
    The Local Group which includes Andromeda contains 30 total galaxies.
    Some scientists predict that our Sun could one day move and become a part of the Andromeda Galaxy.

    Thank you

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