NASA administrator explains Twitter spat with SpaceX

NASA Administrator Jim Bridenstine said Thursday that a recent Twitter statement critical of SpaceX was a signal to all the space agency's contractors about realistic development timelines.

Growing plants in space

As NASA plans missions to the moon and Mars, a key factor is figuring out how to feed crew members during their weeks, months, and even years in space.

SpaceX provides a peek inside their new crew vehicle

SpaceX released new images today of the sleek interior of "Crew Dragon," SpaceX's spacecraft designed to carry humans to the International Space Station, and possibly other future destinations. If things go as hoped, the ...

Russia sets space crew's return after crash

Russia said Monday it would return three of the six international crew members on board the International Space Station to Earth later this week despite no immediate plans to send up their replacement.

Don't make us hitch rides with Russia: NASA chief

The head of NASA appealed to Congress on Friday to put more money into restoring America's ability to send astronauts into space instead of relying on Russian rockets.

Researchers complete 520-day mock mission to Mars

(AP) -- Pale but smiling, an international crew of researchers on Friday walked out of a set of windowless modules after a grueling 520-day simulation of a flight to Mars.

The road to Orion's launch

NASA's Orion spacecraft aims to send humans further into space than ever before, and ESA's European Service Module will provide the essentials for keeping the astronauts alive and on course.

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