Astronomer Avi Loeb suspects this interstellar visitor is a piece of alien technology, citing its unusual traits and the ...

The True Story of an Alien Craze that Captured Turn of the Century America," David Baron looked into one source of that ...

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

A new study reveals that tiny fragments of Earth's atmosphere are transported to and absorbed by the moon via gusts of solar ...

Hints of ancient microbes in Martian rocks and a revived theory about our cosmic ancestry are forcing scientists to rethink ...

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

Futurist Michio Kaku sees humans doing ballet on Mars and projecting their brains into the cosmos. And aliens? Oh, they're coming.

Scientists in Boulder are using existing NASA spacecraft to track a rare interstellar comet called 31/ATLAS as it travels through Earth’s solar system. Comet 3I/ATLAS was first observed on July 1 and ...

NASA has lost contact with MAVEN — a spacecraft that’s been orbiting Mars for over a decade. Just after passing behind the Red Planet on December 6, MAVEN went dark. It had been sending back ...

Scientists discover 26 new bacterial species in NASA cleanrooms, revealing surprisingly resilient microbes with potential ...

In 20 years, you could be holidaying on Mars. That’s according to Elon Musk, who thinks one million Earthlings, some born from his own seed, will be living in dome habitats on the red planet. But ...