Two water worlds found in planetary system Kepler 138

24. 12. 2022

Kepler Stars Water in space Exoplanets

Astronomers measured the size and mass of planets around star Kepler 138 and found out that two of them might be long sought after water worlds. The exoplanets Kepler 138 c and Kepler 138 d are twice as heavy as the Earth and their radius is 20 % bigger. New research also shows evidence for a fourth planet in the system, which orbits near the inner edge of the star’s habitable zone.