A NASA astronaut preparing for a grueling eight-month stint in orbit reveals a plan to test for extraterrestrial life.

A biologist specializing in invasive species has partnered with a former Pentagon strategist in pushing NASA to construct a ...

NASA addresses the release of UFO files and discusses the ongoing search for life on Mars. What are they hiding?

Before Avatar, before Pacific Rim, Wayne Barlowe built an alien world so detailed and scientifically grounded that the ...

Researchers propose turning a future NASA moon base into a quarantine station that would screen space samples before they ever reach Earth.

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

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

Scientists can't fully agree on what GJ504b actually is. It may be a massive planet or a brown dwarf, a mysterious class of ...

Based on evidence collected by the James Webb Space Telescope, researchers have found that interstellar comet 3I/ATLAS could ...

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

An interstellar comet that passed through the Solar System last year may be up to 12 billion years old – far older than the ...

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