Andromeda galaxy's older stellar population in blue.

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Andromeda galaxy's older stellar population in blue. A pronounced warp in the disk of the galaxy, the aftermath of a collision with another galaxy, can be clearly seen in the spiral arm to the upper left side of the galaxy.

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Size: 4200px × 4200px
Photo credit: © Stocktrek Images / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: 224, andromeda, astronomy, galaxy, ngc, universe, warp