The Universe - The Andromeda Galaxy

The Andromeda galaxy is the most distant thing you can see with your unaided eye.

 On a very clear night, it appears as a smudge of light larger than a full moon.

M31: The Andromeda Galaxy
Image Credit & Copyright: Jacob Bers (Bersonic)

 Finding the galaxy is not difficult if you find the constellations of Cassiopeia, Pegasus and Andromeda.

Star map source... http://bdaugherty.tripod.com/gcseAstronomy/constellations.html

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