Is anyone
out there?

Explore alien life, investigate UFO questions, and put the vastness of space into perspective.

AI-generated artist’s impression · not a photograph

Start exploring

Find your next question.

Alien life

Explore Mars, Europa, Enceladus and Titan—and the difference between a possible habitat and evidence of life.

Alien life

Explore the signals and clues a distant observer might be able to detect.

UFOs & sightings

A practical guide to checking a possible satellite train against your time and location.

Try it yourself

Explore what happens when the assumptions change.

How long would you wait for a reply from the stars?

Clear explanations, sources you can follow and honest uncertainty. We separate observations from interpretations and imagination.