Distinct Evolutionary Histories Revealed by Different Orbital Period—Eccentricity Relationships of Super-earths and Sub-neptunes
A study published in Science and conducted by Ke-Ting Shin, Dong-sheng An, Ji-Wei Xie, Ji-Lin Zhou and Fei Dai first revealed that super-earths and mini-neptunes follow different orbital period—eccentricity relations, indicating that despite with similar sizes, super-earths and mini-neptunes underwent distinct dynamical evolutionary histories.
Jun 12, 2026