Alien Life

Alien Life, Solar System

Comets are teaching us how to make breathable oxygen in space

Alien Life, Exoplanets, Planets

Searching for aliens who already know we’re here

Alien Life, Exoplanets, Planets

Life or illusion? Avoiding “false positives” in the search for living worlds

Alien Life, Exoplanets, Planets

The aliens are silent because they are extinct

Alien Life

Web Extra: In search of Dyson spheres

Alien Life, Stars

No alien laser signals seen from strange star

Alien Life, Exoplanets, Planets

Could life exist on other planets?

Alien Life, Stars

SETI sets its sights on KIC 8462852

Alien Life, Solar System

The Real Reality Show: How Did Life Start on Earth?

Alien Life, Exoplanets, Planets

Interstellar seeds could create oases of life

Alien Life

Seth Shostak: Life in the universe

Alien Life, Exoplanets, Planets

Internet investor Yuri Milner joins with Berkeley in $100 million search for extraterrestrial intelligence