Government investigators have determined SpaceX's Falcon 9 rockets are prone to cracks and may be unfit for manned flights.
The contracts, announced under NASA's Commercial Crew Transportation Capability program, bring the total number of missions awarded to SpaceX and Boeing to six each.
With Boeing also delaying its manned space launches to 2018, the space agency will be forced to continue its reliance on Russian rockets, and even that will end in 2019.
The Japanese space agency launched a cargo ship carrying an electrodynamic tether, designed in collaboration with a fishnet maker, to remove some of the debris locked in orbit around Earth.
As part of the "cut-and-come-again" technique, astronauts reaped the first harvest of red romaine lettuce leaves grown on board the International Space Station last month.
The space agency has begun testing a prototype of the Advanced Plant Habitat — its largest plant chamber, which will be delivered to the International Space Station some time in 2017.
The crew members include veteran NASA astronaut Peggy Whitson who now holds the record for the oldest woman to fly in space.
Sunday's flight would mark the first launch of the Antares rocket since its predecessor exploded just seconds after liftoff two years ago.
Tiny little microbes are squatting on the International Space Station and NASA wants to know more about them.
Six companies, including Boeing, Lockheed Martin and Orbital ATK, have been selected to develop full-sized ground prototypes and concepts for deep space habitats.
Virtual space tourism startup SpaceVR has signed a launch agreement with NanoRacks to send the world’s first virtual reality camera satellite into space in 2017.
The order, awarded under the space agency’s Commercial Crew Transportation Capability Program, is the second one granted to SpaceX.
NASA is sending astronauts to stay at the bottom of the Atlantic Ocean to learn about life in the outer space.
NASA says their astronauts don't have access to the popular smartphone app.
The new Soyuz MS spacecraft will carry a crew of Russian, American and Japanese astronauts to the $100 billion orbiting laboratory.
The prototype habitat being tested in orbit could provide living quarters one day for crews going to Mars.
The spacecraft will be permanently docked at the International Space Station.
Bigelow Aerospace developed an inflatable structure that could be useful for missions to Mars.
Elon Musk's spaceflight company has had three successful launches since the June 2015 crash.
Orbital ATK's Cygnus spacecraft will perform double-duty as a cargo delivery vehicle and scientific investigation.
NASA and Microsoft launched Project Sidekick to the International Space Station in December 2015.
The astronaut's year-long expedition paves the way for a future manned mission to Mars.