James Webb uncovered exotic salt clouds surrounding the famous "Pink Planet," solving a long-standing mystery about one of ...

Titan, Saturn's largest moon, is home to vast lakes and seas - not of water, but of liquid methane and ethane. In this video, ...

Somewhere out there, a planet roughly the size of Earth may be orbiting a distant star in conditions that could support life.

The planets are extremely large, with TOI-791 b being about the same size as Jupiter, and TOI-791 c even larger. Yet, they ...

An unusual sighting in a NASA image has reignited speculation that something extraterrestrial once existed on Mars.

NASA's Perseverance rover has uncovered one of the most intriguing clues yet in humanity's search for life beyond Earth.

A new survey of hundreds of astrobiologists reveals that, despite NASA's high-profile declarations about Mars and exoplanet K2-18b, most experts do not yet think alien life has probably been found.

Strange interstellar comet speculated to be alien spacecraft is older than Solar System - Scientists say comet represents ...

Scientists propose building a lab on the moon to screen Mars and other space samples for alien microbes before they ever ...

When a scientific controversy or breakthrough dominates headlines, press officers and journalists often quote a handful of ...

Astronomers studying the interstellar comet 3I/ATLAS say it could be a 12‑billion‑year‑old relic formed in near‑absolute‑zero ...

Grain-sized remnants of alien technology may get caught in solar wind and land on plants and moons close to us ...