Hydrogen Atmospheres on Scorching Planets: The Volcano Secret ⚡ экспресс
Original: "Thin H$$_2$$-dominated Atmospheres as Signposts of Magmatic Outgassing on Tidally-Heated Terrestrial Exoplanets"
Rocky planets close to a star can hold onto a hydrogen envelope thanks to continuous eruptions driven by tidal forces.
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A planet right next to its star, on an elongated orbit. Tidal forces knead it like dough, forcing its interior to spew lava. Hydrogen that should have long since escaped is constantly replenished by volcanic gases. A thin hydrogen envelope is a sign of boiling innards. The James Webb Space Telescope will be able to find such worlds.
🎯 On Jupiter’s moon Io, tidal heating powers hundreds of active volcanoes — the most powerful eruptions in the Solar System.