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Continue to ChatExoplanet Kepler 37b is tiniest yet - smaller than Mercury https://www.worldngayon.com/exoplanet-kepler-37b-is-tiniest-yet-smaller-than-mercury/
Exoplanet Kepler 37b is tiniest yet - smaller than Mercury https://www.worldngayon.com/exoplanet-kepler-37b-is-tiniest-yet-smaller-than-mercury/