Andromeda
Andromeda, also known as M31 or NGC 224,[1] is a spiral galaxy approximately 2.6 million light-years away from the Milky Way.[2] It is visible from most Milky Way systems. Observations made in 2006 by the Spitzer Space Telescope revealed that Andromeda contains an estimated one trillion stars.[1]
Gallery
References
- ↑ 1.0 1.1 Cox, Brian & Cohen, Andrew 2011. Wonders of the Universe. HarperCollins. p. 25, 48, 169. ISBN 9780007395828.
- ↑ "Our neighbor Andromeda". NASA. 2011-02-17. Retrieved 2011-07-15.