Our solar system's famous "invader" might be as old as the Milky Way itself.

Add Yahoo as a preferred source to see more of our stories on Google. Interstellar object 3I/ATLAS is on the opposite side of the sun from Earth - but several spacecraft are in the perfect position to ...

Remember 3I/ATLAS? Yes, the interstellar comet that made plenty of headlines in 2025 is still romping through our solar system.

Mysterious interstellar object 3I/ATLAS made its closest approach to Earth on December 19, coming within just 167 million miles. Scientists have been closely monitoring the object — which is largely ...

Explore powerful space journeys like Gravity and The Martian, where emotion and survival rival the impact of Interstellar.

A cosmic traveler from beyond our solar system is making its closest approach to Earth this week, offering astronomers and stargazers a fleeting opportunity to witness a visitor from another star ...

NASA is ready to call it: Voyager 1 has finally entered into interstellar space, for real this time. And, surprise, the satellite left for the interstellar a year ago, according to an analysis of the ...

A new immersive experience in Atlanta is giving people the chance to step inside the International Space Station without ever leaving Earth.