NASA chief Charles Bolden inspected a prototype spacecraft engine that could power an audacious mission to lasso an asteroid.

NASA is paying $424 million more to Russia to get U.S. astronauts into space.

NASA Administrator Charles Bolden said that automatic budget cuts could affect how much the space agency can dole out to private companies down the road.

A manned Dragon freighter carrying a stash of precious medical samples from the International Space Station parachuted into the Pacific Ocean, completing the first official shipment under a billion-dollar contract with NASA.