After a decade-long, 4-billion-mile (6.4 billion kilometers) trip through the solar system, a European spacecraft named Rosetta is about to do something none of its predecessors have done before: orbit a comet.
The European Rosetta spacecraft's Philae lander aims to be the first probe ever to safely land on a comet. Here's how to land on a spinning ice mountain in space. - Credit: By Karl Tate, Infographics Artist
Rosetta Spacecraft Picks Up a Mysterious Song From Comet 67P - As ESA's Rosetta spacecraft prepared to dispatch its Philae lander to the surface of Comet 67P/Churyumov-Gerasimenko, a set of instruments on Rosetta picked up a mysterious "song" from the comet. Neutral particles released into space by the comet may becoming electrically charged or ionized. The mechanism behind the oscillations remains a mystery