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Molten Lava Planet Discovered!
16 Mar
Summary
- A planet 1.6 times Earth's size, L98-59d, is a molten lava world.
- Surface temperatures reach 1,900C, with magma waves and sulfurous atmosphere.
- New research suggests molten planets may be common, challenging habitability assumptions.
Astronomers have identified a unique exoplanet, L98-59d, located approximately 35 light-years from Earth. This world, roughly 1.6 times the size of our planet, appears to be composed of molten lava, suggesting a new category of planet. Its surface experiences extreme temperatures reaching 1,900C, with large magma waves likely forming due to tidal forces from neighboring planets.
The atmosphere of L98-59d is rich in hydrogen sulfide, contributing to a pervasive 'rotten egg' smell. These conditions are not considered favorable for life. Initial observations hinted at a sulphur-rich atmosphere, which did not align with conventional classifications of rocky or water worlds.
Advanced computer simulations have reconstructed the planet's history, indicating a global magma ocean extending thousands of kilometers beneath its surface and potentially a molten core. This magma ocean is crucial for retaining the planet's distinctive sulphur atmosphere over billions of years.
The findings suggest that molten planets might be more common than previously believed. This implies that some planets within the 'habitable zone' might not be habitable at all, challenging previous assumptions about exoplanet habitability and highlighting the vast diversity of worlds beyond our solar system.
