Rosetta, named for the inscribed stone that allowed 19th-century historians to unlock the secrets of ancient Egypt, is unlocking the secrets of a far more ancient comet. Rosetta team member Paul Weissman discusses the mission.
2 hours ago in Space Exploration
Near Earth Objects (NEOs) are asteroids or comets whose orbits sometimes bring them close to the Earth, thereby posing a potentially threat. The asteroid that struck Chelyabinsk last year was an NEO about 40 meters in diameter. ...
1 hour ago in Space Exploration