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Lava Oceans of Exoplanets ⚡ экспресс

Original: "Magma Ocean Waves and Thermal Variability on Lava Worlds"
· Mohammad Farhat, Eugene Chiang
arXiv:2601.07080v2 · 2026-01-11 · CC BY 4.0 · ⏱ 1 min · Exoplanets
Tidal forces melt entire planets, forging lava oceans with waves kilometers high.
Abstract

Imagine a planet so close to its star that its dayside is an ocean of molten rock. But the star’s tidal forces slosh this ocean from within, creating giant lava waves. As these waves collide, they make the planet flicker unpredictably, like a candle flame in the wind.

Links in the knowledge graph 1

A planet whose orbit is a little stretched dives closer to its star each pass, then backs away. The varying gravity heats it up, solid rocks melt, becoming an ocean of lava.

If a year on such a planet is shorter than a day, even its core becomes liquid.

On the night side, a frozen crust acts as a shore. Tidal waves crash against it, collide, and spawn wandering hot spots. As a result, the planet’s glow flickers erratically, like a candle flame. Waves can rise several kilometers high—slow-moving stone ridges crawling across the scorching expanse.

🎯 The temperature of these lava oceans is higher than in a smelting furnace: around 3000°C.

🎬 Lava worlds like Mustafar from Star Wars turn out even more turbulent than in fiction, thanks to tides.

Scientists
Christian DopplerD. B. McLaughlinDidier QuelozMichel MayorR. A. RossiterDavid Charbonneau
Tags
exoplanet photometry Sun
Laws
Doppler effectKepler's third lawStefan–Boltzmann lawKepler's first lawKepler's second lawLaw of Universal Gravitation
Original: arXiv:2601.07080v2 · CC BY 4.0 · bridge42worlds