We're familiar with the close-up images of Earth captured by orbital satellites and astronauts on the International Space Station. But here are a few pictures of the Earth and Moon captured at a distance, while passing around the Moon, or orbiting distant Saturn. In the words of Carl Sagan, "Look again at that dot. That's here. That's home. That's us. On it everyone you love, everyone you know, everyone you ever heard of, every human being who ever was, lived out their lives."
Since Sagan commented on Voyager 1's image of Earth, several more pics of the Earth and Moon have been captured that really put our tiny spot in the Universe into perspective
Voyager 1 - the Pale Blue Dot
This image, captured by NASA's Voyager 1 spacecraft on February 14, 1990, is the one Sagan was talking about
Cassini - the Earth from Saturn
there's Earth, seen from a distance of 1.4 billion km
Mars Express - the Earth and Moon from Mars
Opportunity Rover - the Earth from the Surface of Mars