The sheer number of objects suggests scientists will soon have to grapple with what counts as a moon versus what’s just a ...

NASA is set to launch a SpaceX rocket from Florida on Wednesday carrying a replacement crew for the International Space ...

This latest rotation of space station crews will bring Butch Wilmore and Suni Williams home after an extended stay in orbit that many have described as a stranding.

Barring any issues, veteran NASA astronauts Butch Wilmore and Suni Williams could be back on Earth on March 17.

Saturn has dozens of new moons, bringing it to a total of 274. All of the new moons are between 2 and 4 kilometres wide, but at what point is a rock too small to be a moon?

The Crew-10 mission will send four astronauts to the space station to take over for Butch Wilmore and Suni Williams’ crew, ...

Astronomers have discovered a panoply of new moons orbiting Saturn, bringing the ringed gas giant's total up to 274 moons—far ...

Voyager 1 crossed into interstellar space in 2012, followed by Voyager 2 in 2018, making them the only spacecraft to operate ...

Their costs are rocketing upwards. Several of NASA’s top private contractors have been plagued by budget overruns and delays ...

The objects around the ringed planet are tiny, but some of them may have formed relatively recently in the solar system’s ...

This month, a total lunar eclipse and blood moon will be viewable across the U.S. Here's the best times and places to view ...

Experiments suggest that processes in the interior of the moon could keep it swathed in an atmosphere that should otherwise ...