Using data from NASA's Hubble and Spitzer Space Telescopes, researchers at the University of Montreal found evidence that two exoplanets orbiting a star 218 light-years away are "water worlds," where water makes up a large fraction of the entire planet. These planets are unlike planets in our solar system -- they were previously believed to be rocky Earth-like planets but instead are really water worlds.

Listen to Franck Marchis in conversation with lead researcher Caroline Piaulet to learn about these new findings.

Press release: https://exoplanetes.umontreal.ca/en/universite-de-montreal-astronomers-find-that-two-exoplanets-may-be-mostly-water/

This episode was recorded live on 19 January 2023.

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