New high-contrast images from SPHERE show a stunning variety of debris disks shaped by collisions of tiny planet-building ...

Last month, mysterious interstellar object 3I/ATLAS came within just 18 million miles of Mars during its unusual trajectory through our solar system. During its approach, NASA’s Mars Reconnaissance ...

As only the third known object to enter our Solar System from the outside, Comet 3I/ATLAS has researchers and amateur astronomers alike buzzing with excitement. Since its initial discovery on July 1, ...

A mysterious interstellar comet — just the third such object ever confirmed to have entered our solar system — streaked past Mars last week. A spacecraft in orbit around the red planet had a front-row ...

A Harvard physicist has asserted that new images of the Manhattan-sized interstellar object rocketing through our inner solar system back his claim that it’s not a comet — but instead possibly an ...

"It's going to look different because it didn't come from our solar system and that's what makes it so magical." Ever since the famous "interstellar invader" comet 3I/ATLAS was discovered in our solar ...

NASA’s Goddard Space Flight Center shared the images of comet 3I/ATLAS. It's possibly as big as Manhattan, likely older than our own solar system and it's traveling through space at speeds of up to ...

NASA released explosive new views of the solar system’s most volcanically active world this week, exciting astronomers and prompting discoveries. Among other standout features, the images show a ...

It takes light a single day to travel 16 billion miles. The Voyager 1 probe will need a little longer, just 49 years.