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Planetary Composition

Uranus and Neptune Ice Giants Atmospheric Studies Heavy Elements Mars Core Rocky Planets Habitability

JWST Finds Metal-Poor Atmosphere on Giant Planet Around a Small Red Dwarf

A peer-reviewed JWST study points to a metal-poor sky over a heavy-element-rich interior, prompting a rethink of how giants form around red dwarfs.

Juno Data Refine Jupiter’s Size, Finding the Giant Slightly Smaller and More Flattened

New Models Suggest Uranus and Neptune May Be Far Rockier Than Long Assumed

Study Challenges 'Ice Giant' Label for Uranus and Neptune

Four Sub-Earth Exoplanets Confirmed Around Barnard's Star