A software glitch in the Cygnus XL caused its main engine to shut down earlier than expected, delaying the more than 11,000 ...

SpaceX launched a trio of spacecraft Wednesday morning, each meant to study the sun and space weather, and their affects on ...

Sierra Space's Dream Chaser spaceplane is facing an identity crisis after NASA changed contract terms to remove its guarantee ...

Aptly named spacecraft might never make it to the orbital outpost after all NASA and Sierra Space have modified the ...

A team of scientists, including NASA researchers, has proposed a dramatic plan to stop asteroid 2024 YR4 from hitting the moon.

Expedition 73 crewmembers sequenced DNA and worked with virtual reality glasses this week, while also continuing to unpack cargo vehicles and congratulating NASA's 24th group of astronaut candidates.

NASA has modified its ISS resupply contract with Sierra Space, which builds the robotic Dream Chaser space plane.

It will be several years before any of these new commercial space stations circle the Earth at around 17,500 miles per hour ...

Californian company Vast is building what would be the world’s first commercial space station, which it aims to launch next ...

Sierra Space Corp. suffered a fresh setback after NASA revised plans to send the company’s spacecraft to the International ...

Two rocket launches with satellites by Space X and United Launch Alliance are scheduled for Thursday morning from Cape ...