NASA believes one icy moon may offer humanity's best chance of discovering alien life. Hidden beneath a frozen shell lies a ...

Former Pentagon UFO investigator Luis Elizondo claims the US government possesses unreleased photographs showing what appear ...

Thousands of people have reported UFOs or alien encounters in Northern California. That number could soon go up.

The Apple TV series wraps noir inside science fiction. With subtlety and charm, Farrell plays an earnest alien just doing his ...

A Soviet astronomer in the 1960s proposed a scale to classify hypothetical alien civilizations. Here’s why the framework is ...

A Chinese spacecraft has returned the first close-up image of one of Earth’s strangest companions: a tiny, lopsided asteroid that seems to dance beside our planet without truly orbiting it. The probe, ...

The scientist has outlined the 'potentially devastating and irreversible long-term impacts' of unknown organisms in space ...

A new study proposes examining Mars and other space samples on the Moon before bringing them to Earth, arguing it would ...

When it comes to the search for life elsewhere in the universe, methane and other chemical compounds are seen as signs of ...

Canadian astronaut Jeremy Hansen is leaving the Canadian Space Agency following his historic Artemis II lunar mission, the ...

Scientists are calling for a lunar quarantine facility where samples from Mars, the Moon, and beyond would be examined before being brought to Earth. They warn that even a tiny alien microorganism ...

Could humans spread Earth life beyond our planet? Astrobiologists explain where extremophiles might survive and why the risks are enormous.