NASA's Advanced Composite Solar Sail System (ACS3) can be seen with the naked eye as it orbits Earth, and can be tracked with a helpful app. An experimental NASA solar sail can be seen in the ...

The mystery behind a "strange noise" that a NASA astronaut heard coming from the Boeing Starliner spacecraft while aboard the International Space Station has been solved, the space agency said Monday.

NASA scientists have discovered a third global energy field around Earth. Known as the ambipolar electric field, this force drives charged particles into space above the poles. Two major global ...

Radian's model differs from multi-stage rockets and could be a cheap alternative to space travel. One company is reviving a decades-old NASA idea to build a reusable space plane that could shuttle ...

NASA/Aero Animation/Ben Schweighart NASA is calling on stargazers to keep their eyes peeled for the space agency’s experimental solar sail mission. After some hiccups, the Advanced Composite ...

After an exhaustive review of suspect transistors in NASA's Europa Clipper spacecraft, NASA managers have cleared the probe for launch next month as planned on a $5.2 billion mission to find out ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Rocky debris ...

NASA on Friday said it would be sending two astronauts on the next SpaceX mission to the International Space Station instead of the planned four so that two who remain stranded there can return in ...

The Europa Clipper spacecraft passed a key milestone on Monday and is on track to launch next month to explore and seek signs of habitability on one of Jupiter’s moons, according to NASA.

In a $19.5 million NASA-funded mission, researchers at George Mason University are heading a project to construct and eventually launch a small satellite into space. Once in orbit, the ...

Nasa has released new 'sonifications' of the Universe on the 25th anniversary of Chandra, its X-ray Observatory. The troubled spacecraft returns empty to New Mexico from the International Space ...

While the commercial Polaris Dawn crew geared up for the first non-government spacewalk, a NASA astronaut and two Russian cosmonauts took off on a more traditional spaceflight Wednesday ...