[astro-ph.EP] Helium is the second most abundant element in the Universe, yet helium-dominated atmospheres are rarely considered as environments for life.
helium
Posted inAstrogeology, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Status Report
Understanding What Helium Absorption Tells Us About Atmospheric Escape From Exoplanets
Atmospheric escape is now considered the major contributing factor in shaping the demographic of detected exoplanets.
Posted inAstrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Ice Giant, Icy Worlds, Neptune, Status Report, Uranus
Uranus And Neptune As Methane Planets: Producing Icy Giants From Refractory Planetesimals
Uranus and Neptune are commonly considered ice giants, and it is often assumed that, in addition to a solar mix of hydrogen and helium, they contain roughly twice as much […]