On Saturday, 15th January, at 2:00 GMT, the European Space Agency's (ESA) Huygens space probe will land on Saturn's moon Titan.
Previously, NASA's Cassini probe flew by Titan, getting a faint glimps of the planets surface, in which geologists believe to be similar to a young Earth. Cassini, carrying Huygens, will drop it's important cargo down to Titan's mysterious surface.
For more information on the landing, visit NASA.gov. If you would like to view the landing as it happens, the Science Channel will be showing it live on Saturday a 2:00A.M. GMT.