The Whirlpool Galaxy
Also known as: Messier 51a, M51a, or NGC 5194
The next pages explain this color and
describe the Whirlpool Galaxy…
SOURCE: By NASA and European Space Agency – http://antwrp.gsfc.nasa.gov/apod/ap050428.html
SOURCE OF 2ND VERSION: http://www.spacetelescope.org/images/heic0506a/
Public Domain, https://commons.wikimedia.org/w/index.php?curid=3863746