"Extremophile" bacteria could survive asteroid impacts that are strong enough to launch them into space, suggesting that life could travel between planetary bodies.

"I do not believe we yet have convincing evidence of the presence of DMS in K2-18b's atmosphere." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

Turbulent plasma near distant stars could blur ultra-narrow signals before they leave their home star systems - making them difficult to detect.