Alien Life

Alien Life, Solar System

Scientists find an ancient source of life-supporting oxygen

Alien Life, Solar System

Earth’s ‘Milky seas’ observed from space and sea

Alien Life, Solar System

Rare Earth hypothesis: Why we might really be alone in the universe

Alien Life, Exoplanets, Robotic Spaceflight

JWST will search the atmospheres of exoplanets for signs of alien life

Alien Life, Robotic Spaceflight, Solar System

Curiosity rover quantifies key ingredient for life on Mars

Alien Life

Why are we fascinated by stories of UFOs and aliens visiting Earth?

Alien Life, Cosmology

Ask Astro: If the universe is 13.8 billion years old, shouldn’t other life have existed before us?

Alien Life, Solar System

Should Earthlings blast out our location to the cosmos?

Alien Life, Robotic Spaceflight

How the James Webb Space Telescope will search for extraterrestrial life

Alien Life, Solar System

When it comes to mass extinction, meteorite size doesn’t matter

Alien Life, Planets, Solar System

The case for life on Venus — and the private mission that aims to find it

Alien Life

Technosignature from Proxima Centauri — and why astronomers rejected it