EPIC 228801451 RV and activity indices

Earth, Venus, Mars and some extrasolar terrestrial planets1 have a mass and radius that is consistent with a mass fraction of about 30% metallic core and 70% silicate mantle. At...地球、金星、火星及部分标注上标1的系外类地行星，其质量与半径均符合约30%为金属核、70%为硅酸盐地幔的质量占比特征。At...