Nearby Earth-Sized Exoplanet HD 137010 b Sparks Habitability Debate
TL;DR Summary
Astronomers analyzing Kepler data have identified HD 137010 b, a rocky, Earth-sized exoplanet orbiting a nearby K-type orange-dwarf star about 150 light-years away, with a 355-day year. Its Earth-like size and orbit make it a compelling habitability candidate, potentially aided by a CO2-rich atmosphere, but the planet’s temperature is expected to be very cold and only a single transit was observed. Follow-up observations—ideally three transits—are needed to confirm its existence and assess habitability, especially given potential tidal locking around cooler stars.
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