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The Andromeda Galaxy

The Andromeda Galaxy. What Am I ?. The Andromeda galaxy (Messier 31, M31 or NGC 224) is a spiral galaxy about 2.5 million light years from Earth. When Was I Made?. According to astronomers, Andromeda was formed out of the collision of two smaller galaxies 5-9 billion years ago.

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The Andromeda Galaxy

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  1. The Andromeda Galaxy

  2. What Am I ? • The Andromeda galaxy (Messier 31, M31 or NGC 224) is a spiral galaxy about 2.5 million light years from Earth.

  3. When Was I Made? • According to astronomers, Andromeda was formed out of the collision of two smaller galaxies 5-9 billion years ago

  4. Where Can You Find Me? • Andromeda is the nearest spiral galaxy to the Milky Way, but not the closest overall • The Andromeda galaxy is in the Andromeda constellation, named after the mythological princess, Andromeda

  5. The Andromeda Galaxy

  6. How Big Am I ? • Andromeda is the largest galaxy of the Local group, which has the Andromeda Galaxy, the Milky Way, the Triangulum Galaxy, and about 30 other smaller galaxies • Andromeda is estimated to be to be 7.1x10 solar masses, and has about 1 trillion stars, more than in the Milky Way.

  7. The Local Group

  8. Can You See Me? • With an apparent magnitude ( measure of brightness) of 3.4, the Andromeda Galaxy is known to be one of the brightest Messier objects(a set of astronomical objects), making it visible to the naked eye on moonless nights

  9. It appears more than six times as wide as the full Moon when photographed through a large telescope, only the bright centre is visible to the naked eye ,or when viewed using binoculars or a small telescope

  10. Collision With The Milky Way • The Andromeda Galaxy is approaching the Milky Way at about 100 to 140 km per second ,400 light years every million years, making it one of the few blue-shifted galaxies. • The Andromeda Galaxy and the Milky Way are expected to collide in about 4.5 billion years. A likely result of the collision is that the galaxies will combine to form a giant elliptical (egg shaped) galaxy.

  11. Collision With The Milky Way • The fate of the Earth and the Solar system in the collision are currently unknown. If the galaxies do not combine, there is a small chance that the Solar System could be forced away from the Milky Way or join Andromeda

  12. NGC 2207 and IC 2163 are an example of what a collision of galaxies looks like

  13. My sources • Google images • Wikipedia • http://www.historyoftheuniverse.com/andromed.html • http://scienceray.com/astronomy/great-facts-about-the-andromeda-galaxy/ • http://science.howstuffworks.com/dictionary/astronomy-terms/andromeda-galaxy-info.htm

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