Click above to listen to part 4 of Space Rocks!, featuring Avi Loeb, professor of Science at Harvard and chair of the Department of Astronomy, suggesting that an extra-solar object named ‘Oumuamua may not be either asteroid nor comet, but instead an alien artifact.

Space Rocks!:
Part 1: Roger Launius / Space Exploration
Part 2: J.L. Galache / Asteroid Mining
Part 3: Mark Showalter / Ultima Thule
Part 4: Avi Loeb / ‘Oumuamua Or…?

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2026 Webby Award Nominee
for our three part series on the 20th anniversary of Hurricane Katrina

Big Picture Science is an immersive radio show and podcast that reveals the unexpected connections in science.

Our Skeptic Check episodes take a critical look at extraordinary science claims and pseudoscience.

Don’t settle for a science snapshot. Get the big picture. 

Hosted By

Molly Bentley Executive Producer and Co-Host, Big Picture Science  

Seth Shostak Producer and Co-Host, Big Picture Science
Senior Astronomer, SETI Institute

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