Ride was eminently qualified for space flight. So why did the press ask about makeup and periods?
NASA's InSight mission, which will dig into the planet's core, is the latest to explore for signs of life on the red planet.
Although he was not alive to see it happen, getting an American to the moon was John F. Kennedy's ultimate dream.
The Challenger launched too early—in part, because Reagan wanted to give a speech about it.
Scientists say Ross 128 b is a “temperate” planet.
Among the adventuresses: a swashbuckling pirate, a medieval crusader and pioneering space traveler.
Chinese state media has reported that the country’s space program will launch a mission to land on the far side of the moon in 2018, two years earlier than originally scheduled.