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

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

Electrons released when cosmic rays strike water-ice can provide energy for microbes and facilitate the formation of complex ...

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

The search for alien life has moved from planets to moons. This video dives into the hidden, globe-spanning oceans beneath ...

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

With the recent discovery of traces of what may or may not be or have been life on Mars, eyes are turning to another world in the solar system which might harbor extraterrestrial life. Old data from ...

An alien doorway on Mars, as captured by Mast Camera (Mastcam) onboard NASA's Mars rover Curiosity on Sol 3466 (image courtesy NASA) Scientists and David Bowie have all famously wondered if there is ...

As NASA plans for long-term human missions beyond Earth, one question keeps resurfacing: how do you sustain life in places ...

Decades ago, a spacecraft suggested Saturn's largest moon, Titan, had an ocean. New observations suggest that the liquid may look more like slush.

Forbes contributors publish independent expert analyses and insights. I write about the future of the commercial space industry. Over the years, I and others have written extensively about why the ...