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An older person sits on a chair against a white backdrop, with a colorful outer space scene digitally added around the background.

Why the search for alien life is about patience, not belief

Astronomer Jill Tarter explains why SETI is really about technology, patience, and learning how to tell alien signals from our own.

A vintage, hexagonal brooch featuring a realistic painted human eye in the center, surrounded by a metallic frame.

The Well

The case for useless knowledge

Astrobiologist Betül Kaçar on why the simple act of asking questions (without needing a reason) is one of the most powerful things a human can do.

A man looking at a meteorite.

The Big Think Interview

How two freak accidents shaped human evolution

“So many things could have happened in a different way that we wouldn't be here at all, both individually, for sure, and certainly as a species.”

Sean B. Carroll

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.

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