Far beyond Neptune, in the frozen depths of the Kuiper Belt, many ancient objects oddly resemble giant snowmen made of ice ...

SIX planets will align in the evening sky this week in a rare cosmic phenomenon you’ll be able to see with your own eyes. Mercury, Venus, Neptune, Saturn, Uranus, and Jupiter will all appear ...

For the first time, a much younger version of the sun has been caught red-handed blowing bubbles in the galaxy by astronomers using NASA's Chandra X-ray Observatory. The bubble—called an "astrosphere" ...

Comet 3I/ATLAS is not coming back — and NASA says it is not a threat to Earth — but a new trajectory study argues we could ...

Solar system’s largest planet remains a brilliant, unwavering beacon, forming a striking trio with Castor and Pollux ...

Saturn’s largest moon, Titan, might have formed after a collision with a lost moon, according to new research.

Scientists have proposed a daring mission to intercept interstellar comet 3I/ATLAS, the third such object ever detected in our solar system. But there's one problem: the interstellar comet is moving ...

Two research papers propose extreme gravitational slingshot trajectories that could fling a spacecraft onto a path to catch up with 3I/ATLAS, which NASA and the European Space Agency describe as an ...

Six planets will align in February as part of a rare planetary parade. Find out how and when you can see the event.

Six planets will align in February as part of a rare planetary parade. Find out how and when you can see the event.