The 17 travelers hail from five different countries.

The announcement formalized a timeline that Chinese scientists have set out before, as the United States and China ramp up competition in space.

The Space Launch System's booster and engine are now projected to cost at least $13.1 billion over 25 years.

"It is gratifying to see folks coming around."

Virgin Galactic is preparing to launch its first spaceflight in nearly two years on Thursday, as the space tourism company aims to pass a final test before flying commercial passengers. Called Unity 25, the mission represents the company’s fifth spaceflight to date and is launching out of Spaceport America in New Mexico.

Scientists are testing ways to construct buildings on Mars and the moon without hauling materials from Earth. One possible solution: 3D printed melted regolith.

Tunnels deep underground in North Yorkshire are providing a unique opportunity to study how humans might be able to live and operate on the

Solitude is not a curse—it urges us to explore the mysteries of our galaxy and beyond.

"I think it would be pretty ambitious... but really great if we could pull it off."

A new study led by physicist Sascha Kempf at the University of Colorado Boulder has delivered the strongest evidence yet that Saturn's rings are remarkably young—potentially answering a question that has boggled scientists for well over a century.

Jed McCaleb, who founded the defunct bitcoin exchange Mt. Gox, has announced he's planning to launch the world's first private space station.

NASA's TESS spacecraft found the two planets, which are slightly larger than Earth.

Their biggest obstacle is a thick layer of haze that blankets the planet, shielding it from the probing eyes of space telescopes and stymying efforts to study its atmosphere. But now, NASA's new JWST has solved that issue. The telescope's infrared technology allows it to see planetary objects and fe

An experimental Chinese spacecraft returned to Earth on Monday after staying in orbit for 276 days, China's state media reported, completing a landmark mission to test the country's reusable space technologies.

Reusable uncrewed vehicle lands after spending 276 days in orbit, marking an ‘important breakthrough’.

A recent analysis from NASA's Voyage spacecraft has led scientists to conclude that four of Uranus' largest moons contain water. These moons are believed to have an ocean layer that exists between the icy crust and core, and they could be miles deep. Uranus has at least 27 moons, five of which were large: Ariel, Umbriel, Titania, Oberon, and Miranda. According to recent peer-reviewed study from NASA scientists, the four largest are believed to have the ability to retain heat caused by radioactive decay.

The SpaceX Dragon, with Expedition 69 crew members Steve Bowen and Woody Hoburg of NASA, UAE (United Arab Emirates) astronaut Sultan Alneyadi, and Roscosmos cosmonaut Andrey Fedyaev aboard, has successfully docked to the forward port of the Harmony module of the International Space Station at 8:01 a.m. EDT.

As big as a football field and heavier than 200 elephants, de-orbiting the ISS represents a monumental challenge. But is there another future for the space station?

A small team of astronomers at Université Côte d'Azur, Observatoire de la Côte d'Azur, working with a colleague from MCCE, Observatoire de Paris, Sorbonne Université, has found more evidence that the moon has an inner core similar to Earth's.

Researchers have mapped more than 85,000 volcanoes on the surface of Venus — but suspect there may even be more.