Orion Nebula & Andromeda Galaxy

Orion Nebula

  • one of the brightest emmision nebulae, and is visible to the naked eye in the night sky
  • closest region of massive star formation to Earth
  • 24 light years across
  • mass of 2000 times that of the Sun

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Andromeda Galaxy

  • a spiral galaxy approximately 2.5 million light-years (2.4×1019 km) from Earth
  • in the Andromeda constellation
  • Also known as Messier 31, M31, or NGC 224
  • The Andromeda Galaxy is the nearest spiral galaxy to our Milky Way galaxy, but not the closest galaxy overall.

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