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 ...

"It's really not a question of robotic exploration or human exploration," Ehlmann said. "It is an 'and' — it's robotic and ...

How did life begin on Earth? While scientists have theories, they don't yet fully understand the precise chemical steps that ...

When we talked about searching for life on Europa, we didn't mean making the place a nightmare for arachnophobes.