An interstellar trespasser known as 3I/ATLAS is almost certainly a comet. So, why do so many people think it's ...

The asteroids are as large as around 75 and 91 feet in diameter, according to the Center for Near Earth Object Studies.

Sentinel-6B will extend a decades-long legacy of global sea level measurements that help forecast weather, protect coastal ...

Lettuce grown in space loses calcium, raising concerns about critical nutritional risks for future missions to Mars.

Scientists say 3I/Atlas came closest to Mars in October. Its path this month put it in the path of the warm rays of our sun, where a tail became more visible. The 3.5-mile solar object is traveling at ...

Envision a time when hundreds of spacecraft are exploring the solar system and beyond. That’s the future that NASA’s ESCAPADE ...

Mars is a cold, dry, desert-like planet. But billions of years ago, scientific evidence suggests that it had a thick ...

A Falcon 9 rocket topped with an ocean-observing satellite launched into space Sunday night from California's central coast.

NASA selects 10 new astronauts from among 8,000 applicants and begins training that will take them into orbit, to the Moon, ...

SpaceX launched an advanced ocean-mapping satellite to orbit from California early Monday morning (Nov. 17). The Sentinel-6B ...

Three Chinese astronauts have returned to Earth after they were briefly stranded at the nation's space station when space ...