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

Early Mars seems to have had a protective atmosphere and liquid water in the form of oceans, rivers, and lakes. It may also ...

The research is mounting up that we might not be alone in this big wide world. So what's the likelihood that aliens are out ...

The afternoon of 7 August 1996 isn’t a time that sticks in many people’s minds. But if things had worked out differently, it might have been etched into our collective memory. At 1.15pm, US President ...

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

For fans of 1987's "Predator" and its subsequent sequels, these 15 action-packed, suspense-driven monster romps will ...

A giant impact on the early Earth could have brought the building blocks of RNA to our planet, which new research suggests ...

Grab-and-go missions to asteroids have provided some of the most scientifically valuable samples since the Apollo ...

Following speculation that comets could have been alien spacecrafts, more and more experts in the field are convinced that ...

Tantalising signs of past microbial life showed up on Mars this year, but to truly know whether they contain the answer to ...

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 ...

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