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Planètes de lave
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Planètes de lave

Les planètes de lave sont des mondes rocheux orbitant extrêmement près de leur étoile, bien plus près que Mercure du Soleil. Leur période orbitale ne dure que quelques heures ou jours. En raison du rayonnement stellaire intense, les températures atteignent des milliers de degrés Celsius, fondant la roche en océans de magma. Souvent verrouillées par les effets de marée, une face fait toujours face au brasier tandis que l'autre reste dans l'ombre glaciale. Cet écart thermique extrême et les forces de marée craquellent la croûte, générant un volcanisme intense et évaporant les roches.
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Latest news from Planètes de lave

Thick carbon dioxide or sulfur dioxide atmospheres possible on lava planet TOI-561 b
icon5. 9. 2026
iconÉtoiles | Exoplanètes | Atmosphères planétaires | Planètes de lave
Image: Thick carbon dioxide or sulfur dioxide atmospheres possible on lava planet TOI-561 b
TOI-561 b is a rocky, ultrashort-period exoplanet that orbits its star extremely quickly, resulting in intense irradiation. Recent data suggests this world may possess a thick, secondary atmosphere hovering above a global, molten surface, or magma ocean. Unlike the primary atmospheres of giant planets, which are captured from gas clouds, a secondary atmosphere is generated by gases released from the planet's interior over time. Researchers used the PROTEUS framework, a computer model that lin...
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TOI-1752 hosts a lava world and a sub-Neptune in the habitable zone
icon21. 4. 2026
iconÉtoiles | Exoplanètes | TESS | Exoplanètes habitables | Planètes de lave
Image: TOI-1752 hosts a lava world and a sub-Neptune in the habitable zone
TOI-1752 is confirmed to host a lava world and a sub-Neptune in the habitable zone. This system is a prime target for studying planetary diversity and potential habitability....
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Volcanic activity and mantle dynamics shape the lava world K2-141 b
icon4. 3. 2026
iconÉtoiles | Exoplanètes | Planètes de lave
Image: Volcanic activity and mantle dynamics shape the lava world K2-141 b
K2-141 b, a lava world, shows mantle convection and nightside volcanism. Volcanic eruptions release gases, but their heat is too faint to detect. Future studies may spot atmospheric signals from outgassing....
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Simulations of TRAPPIST-1 e, f, and g reveal how CO2 and H2O shape atmospheres during magma ocean stages
icon16. 12. 2024
iconÉtoiles | Exoplanètes | Atmosphères planétaires | Naines rouges | Planètes de lave
Image: Simulations of TRAPPIST-1 e, f, and g reveal how CO2 and H2O shape atmospheres during magma ocean stages
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Computer simulation suggests that magma oceans on hot, tidally locked exoplanets might be only about 100 meters deep
icon22. 8. 2024
iconÉtoiles | Exoplanètes | Planètes de lave
Image: Computer simulation suggests that magma oceans on hot, tidally locked exoplanets might be only about 100 meters deep
...
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