The Pale Blue Dot

In 1990, at around 3.8 billion miles from Earth, the Voyager spacecraft pointed its camera back at Earth and took a picture of our homeworld. Our planet didn't even fill one pixel of that image.

On the anniversary of Carl Sagan's birth, if you've never heard him read from "Pale Blue Dot", please spend three and a half minutes of your life on this video:

http://en.wikipedia.org/wiki/Pale_blue_dot