The Perseverance rover has been exploring Jezero Crater for years, but it's never found an otherworldly object quite like ...

From mudstones on Mars to strange gases in exoplanet atmospheres, tentative evidence for extraterrestrial life is starting to ...

A NASA astrophysicist argues alien civilizations may be out there—but too quiet or distant for us to detect. Here’s the new ...

A mysterious interstellar comet known as 3I/ATLAS is about to make its closest approach to Earth in December 2025. Here's ...

Pluribus imagines Kepler-22b as an ocean world that sends a gift to humanity through radio waves. In real life, no such ...

Scientists have been fascinated by the third interstellar object to ever known to visit our solar system that is revealing ...

NASA's alien-hunting Europa Clipper spacecraft took seven hours of ultraviolet observations of interstellar comet 3I/ATLAS ...

By chance, NASA Europa Clipper captured interstellar comet 3I/ATLAS in ultraviolet light as it sped past Earth, revealing hidden gases and offering a rare preview before its Jupiter encounter ahead.

(KTLA) — NASA on Wednesday released new images and data of Comet 3I/ATLAS, the rare interstellar object that set off weeks of speculation — and a full-blown online debate — over whether it could be an ...

New 3I/ATLAS images from NASA and the ESA suggest the interstellar comet is active as it approaches Earth in December.

In the many decades of NASA exploration, there has only been one detection that got on that scale. It was collected by the ...