NASA astronaut Jonny Kim flew home with two Roscosmos cosmonauts from the International Space Station packed tight in their ...

Comet 3I/ATLAS makes closest approach to Earth, 170 million miles away, offering rare insights into interstellar space and ...

NASA astronaut Jonny Kim recounted the highlights of his first spaceflight during a news conference held Friday, December 19 ...

Russian Soyuz crews are now spending eight months aboard the space station instead of six to stretch supplies and lower costs ...

The 84-foot-diameter space rock—dubbed "2025 XM"—is hurtling through the solar system at a zippy 9,753 miles per hour.

NASA and its commercial partners are conducting demonstrations of advanced satellite relay capabilities supporting near-Earth science missions as part of the Communications Services Project.

President Donald Trump signed an executive order that aims to return astronauts to the moon through NASA’s Artemis space ...

Mars changed from a blue world with water to a red desert because its atmosphere escaped into space over billions of years.

On Dec. 18, 1999, NASA launched its flagship Terra satellite into Earth's orbit to collect data about Earth's changing ...