(Photo credit: James Gitlin)
On a clear night (much more frequent now than in ages past since the sun has gone into red giant stage and burned off the majority of the oxygen-nitrogen envelope of gases that our ancestors breathed), you can see our uninvited galactic guest, the Andromeda galaxy. In ages past, Andromeda was just a fuzzy blur in the telescopes of proto-human scientists like Galileo Galilei, Edwin Powell Hubble, and Bunsen Honeydew, but these days it hovers majestically in the plane of the Milky Way.
for the real story of this cool pic, go here:
http://en.wikipedia.org/wiki/Andromeda-Milky_Way_collision
and don't forget to check out the real Astronomy Picture of the Day.
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