Watch this video to find out more about the Earth, planets in our Solar System and other planets far off in outer space. From up here on the International Space Station I get a great view of Earth.

Current theories about its origin provide new clues to the genesis of the solar system Pluto, our sun's most remote and mysterious planet, may once a satellite of Neptune.

It's no surprise that space is massive, but even getting to the furthest planet from Earth within our own solar system would ...