Search For Life Archives - Big Think

Everything Videos Articles

View of a planet’s surface in the foreground with a red moon or planet and stars visible in the background against the dark space.

The Well

Is there a Planet B? An astrophysicist answers.

30 years ago, we didn’t know other stars had planets orbiting them. Now, we may be on the verge of finding Earth’s Twin. Sara Seager explains.

Black and white illustration of a stylized human eye in the top left and a detailed depiction of an eyeball’s internal structure in the bottom right on a beige background.

The Well

What NASA is really looking for in space

We may be close to finding life beyond Earth. But would we even recognize it if we did? Astrobiologist Betül Kaçar explains what signs NASA is looking for.

Illustration of three planets orbiting a star, with colored bands indicating the habitable zone; text reads "FINDING LIFE Habital Zone.

The Big Think Interview

How close are we to finding alien life?

"There's a long history of people claiming planets which look Earth-like, Earth 2.0, Earth twins."

A person in a suit sits on a chair against a cosmic background with galaxies and stars.

Searching for aliens and Earth 2.0

"Many astronomers are really driven by the search for Earth twins because I think deep down the natural endpoint of this whole goal of looking for planets is to answer the question, are we alone?"

Learn from the world's biggest thinkers.

© Copyright 2007-2026 & BIG THINK, BIG THINK PLUS, SMARTER FASTER trademarks owned by Freethink Media, Inc. All rights reserved.