Unexplainable

The Hitchhiking Microbe’s Guide to the Galaxy

Published: April 15, 2026

Duration: 26:18

Can microbes travel through space on meteorites? It’s an idea called “lithopanspermia,” and to work out if it’s even feasible, some researchers decided to shoot microbes — with a gun.


Guests: K.T. Ramesh, professor of science and engineering at Johns Hopkins University; Lily Zhao, mechanical engineer at Johns Hopkins University


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