Has NASA's Perseverance rover at long last found evidence that life did indeed once exist on Mars? Well, after more than four years of scouring the Red Planet's rocky surface, the intrepid rover has ...

NASA has quietly hit pause on what it billed as its first dedicated hunt for alien biosignatures, reacting to fresh data that ...

Add Yahoo as a preferred source to see more of our stories on Google. A biosignature is any characteristic, element, molecule, substance or feature that serves as evidence for past or present life. It ...

NASA's Perseverance rover has found potential evidence of ancient microbial life on Mars. Scientists must bring the rock to Earth for further study, but three key features make it promising. The ...

The United States is stepping back from the most direct test yet of possible alien biology on Mars just as new telescopes and probes are racing ahead to hunt for life light‑years away. Lawmakers have ...

As the New York Times reports, NASA researchers aren’t quite ready to declare that they’ve found definitive biosignatures — the scientific term for “signs of life” — in the piece of ancient rock the ...

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) When scientists started looking into the data, they found two types of iron-rich ...

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Amy J. Williams, University of Florida (THE CONVERSATION) As the Perseverance rover ...

This figure shows ozone detection in Venus' atmosphere between 2006 and 2014 by the ESA's Venus Express. Credit: Evdokimova et al. 2011, JGR Planets Just because we can find ozone in the atmosphere of ...