Earth and its rocky neighbours reveal how planetary processes—core-mantle differentiation, crust formation, tectonics, and geochemical cycling—between interior and surficial reservoirs shape habitability.
exoplanets
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The Planet That Shouldn’t Be There
A newly discovered exoplanet suggests that a different way to build planetary systems could be possible.
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Rare Hot Jupiters Could Reveal How All Giant Planets Form
A new analysis shows that the way massive planets migrate after their formation helps determine whether they have companion planets. The process hints at planetary formation in general.
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This Potential Exoplanet Is Earth Sized but May Be Colder Than Mars
A new analysis of old mission data may have revealed a possible Earth-sized planet orbiting the K-dwarf star HD 137010.
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A “Lava World” Unexpectedly Hosts an Atmosphere
TOI-561 b, an exoplanet roughly 275 light-years away, seems to have a thick atmosphere despite being wildly irradiated by its host star.
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Planet-Eating Stars Hint at Earth’s Ultimate Fate
A sampling of aging Sun-like stars demonstrates that they likely eat their closest planets.
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Tilted Planet System? Maybe It Was Born That Way
New observations could shed light on the degree to which misalignment in a planet-forming disk contributes to skewed planetary orbits.
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Exoplanet Triggers Stellar Flares and Hastens Its Demise
HIP 67522 b can’t stop blasting itself in the face with stellar flares, a type of magnetic interaction that scientists have spent decades looking for.
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This Exoplanet May Have Grown Stranger as It Journeyed Starward
WASP-121b, an already unusual planet, might have a remote origin that explains some of its peculiar properties—from iron rain to the unexpected presence of methane.
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A New Exoplanet Resets the Scale
TOI-6894 b, the largest exoplanet relative to its host star yet seen, doesn’t fit the most widely accepted formation model for giant worlds.