Posted inAstrogeology, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Press Release Rocky Histories: The Effect Of High Excitations On The Formation Of Rocky Planets by Keith CowingNovember 21, 2022November 21, 2022 Rocky planets both in and outside of our solar system are observed to have a range of core-mass fractions (CMFs).