Tides and atmospheres on TRAPPIST-1 planets may help life thrive

日期:2019-03-07 05:16:11 作者:翁蠕 阅读:

NASA By Leah Crane The outer planets of the TRAPPIST-1 system might be better for life than we thought. Their cores are stretched by gravity, which generates heat, and there’s a possibility these exoplanets have atmospheres, so the outermost planets could be warmer and wetter than we thought, maybe even with air. We have very little data on the TRAPPIST-1 planets. We know their distances from their star and one another, and their approximate sizes and masses. Based on this limited information,