Jessica Barnes

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Jessica Barnes

Dr. Jessica Barnes is an Associate Professor in the Lunar and Planetary Laboratory at the University of Arizona.

A fuzzy ball of light amid smaller sharper streaks of light against a black background.

Meet 3I/Atlas, An Object From Another Solar System

The third interstellar object ever observed is in our neighborhood—for now. And, asteroid Bennu could contain dust from far-off solar systems.

Segment

The Shape-Shifting Science Of Sand Dunes

A sand dune is much more than just a big pile of sand. But how do they work? And what else do scientists want to know about sand?

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