15 Results

A Wrinkle in Nature Could Lead to Alien Life

There may be more than one way to tune a universe for life.

The Trouble with Counting Alien Civilizations

Life on Earth is a sketchy guide to intelligent life in the cosmos.

Life on Mars, from Viking to Curiosity

A brief history of the scientific debate swirling around the Red Planet.

If ET Calls, Think Twice About Answering

Why some say searching for ET is best done quietly.

Do Aliens Have Inalienable Rights?

What ET teaches us about our moral obligations.

Listening for Extraterrestrial Blah Blah

At the cosmic dinner party, intelligence is the loudest thing in the room.

The Romantic Venus We Never Knew

Venus used to be as fit for life as Earth.

Is Physical Law an Alien Intelligence?

Alien life could be so advanced it becomes indistinguishable from physics.