The space agency got a close look at the interstellar visitor over the past few months as it zipped by Mars and the sun ...

"If this is how the agency handles one of its most high-profile flagship missions, how many other missions are in imminent ...

From measuring one's mass to boosting the almost 1 million pounds that comprise the entire orbiting complex, the Expedition ...

The Orion crew module gets stacked onto the Space Launch System in preparation for the upcoming Artemis 2 mission in early ...

In 2026, a first-of-its-kind spacecraft—launched on a rocket dropped out of a plane—will attempt to save NASA’s Swift ...

It's possibly as big as Manhattan, likely older than our own solar system, and it's traveling through space at speeds of up ...

NASA spacecraft across the inner solar system captured new views of Comet 3I/ATLAS—the third known interstellar object ...

NASA has released close-up images of interstellar comet 3I/ATLAS after being delayed during the government shutdown. NBC News ...

As far as physical features, NASA says 3I/ATLAS has speed, color, and direction that are, “consistent with what we’d expect ...

The object is the third interstellar visitor to our solar system ever confirmed. It will reach its closest point to Earth ...

The rare interstellar comet, also known as 3I/ATLAS, was first discovered in July and has been photographed several times.

The unusual comet—which is to pass Earth again in the coming weeks—is only the third known object to visit us from outside ...