Why is NASA's Commercial Crew Program to develop private human transport ships to low Earth orbit important?
A sleek, white gumdrop-shaped space capsule that aims to carry up to seven astronauts to the International Space Station and return to land anywhere on Earth was unveiled Thursday by SpaceX.
A senior Russian official said Tuesday that Russia will only need the International Space Station (ISS) until 2020, as previous plans by Washington to use it until 2024 were thrown into doubt amid the Ukraine crisis.
In 1961, after NASA shot Alan Shepard into space, a 9-year-old boy named Steve Hawley asked his mother to buy him a dime-store telescope.
A secretive mission will pass a quiet milestone at the end of this month when the U.S. Air Force's unmanned spaceplane the X-37B surpasses 500 days in space.
While the United States and Russia traded sanctions this week in a burgeoning crisis over Crimea, astronauts from both nations rose above the discord in their sanctuary hundreds of miles from Earth.
Orbital Sciences Corporation's unmanned Cygnus spaceship is on track to berth with the International Space Station early Sunday, marking its second trip to the research outpost, the company said.
Kansas State University researchers are improving astronauts' outerwear for outer space.
The first test mission of a new deep space capsule that could one day take humans to Mars is on track for September 2014, the US space agency said Tuesday.
A privately-operated unmanned cargo ship built by Orbital Sciences Corporation left the International Space Station on Tuesday after its first successful demonstration mission, NASA said.