Water Worlds May Hide Water Underground Summary

A population study of 43 exoplanets orbiting M-dwarf stars used both the transit method and radial velocity method to find the densities of the worlds and a surprising pattern emerged. The planets are less dense than expected, suggesting they are not purely rock but half-rock and maybe half-water. Plus, star factories in the Milky Way, glaciers on ancient Mars, and This Week in Space History.

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Get your weekly dose of all that's new in space and astronomy with Escape Velocity Space News. The sky is not the limit, as we bring you the latest scientific discoveries and rocket launches. EVSN is brought to you by the team behind CosmoQuest at the Planetary Science Institute, and features hosts Dr. Pamela L. Gay and Erik Madaus with special guest interviews by Beth Johnson and audio engineering by Ally Pelphrey. EVSN is supported through Patreon at https://www.patreon.com/CosmoQuestX.