From Viking to Perseverance, scientists have spent decades chasing chemical hints that could point to life beyond Earth.

The search for alien life often sparks the imagination with images of extraterrestrial beings and strange worlds. However, a new theory is shifting the focus—what if life elsewhere in the universe ...

A new paper posits that advanced alien civilizations may communicate through subtle flashes, like fireflies do on Earth. The ...

Machine learning is quietly rewriting the rules of the cosmic hunt for company. Instead of waiting to recognize familiar ...

Want to be a top notch candidate for hosting alien life? Then there's a few key requirements you should be aware of: Ideally, you're a large object like a moon or a planet; scientists suspect you also ...

"The universe is a pretty big place. So if it's just us... seems like an awful waste of space," goes a line from the 1997 film "Contact." In the movie, Jodie Foster plays Dr. Ellie Arroway, a radio ...

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

As astronomers learn more and more about exoplanets and the possibility of life on other worlds, sometimes new data contradicts what they've learned in the past. That seems to be the case with the ...

If so, why haven’t they said hello? The humble residents of this pale blue dot have been on a quest to find an alien civilisation for more than a century. First, it was the “canals” of Mars. Then ...

The best reason to send humans to Mars isn’t for guts or glory—or the construction of colonies to safeguard against existential Earth-bound risks. Instead it’s to answer a single, simple question: Is ...