Viewed as a planet, Earth is a differentiated rocky world with an iron-rich core, silicate mantle and crust, a global magnetic field, active plate tectonics, abundant surface liquid water, and a nitrogen-oxygen atmosphere strongly modified by life. Earth serves as the reference point for comparative planetology and habitability studies.
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Viewed as a planet, Earth is a differentiated rocky world with an iron-rich core, silicate mantle and crust, a global magnetic field, active plate tectonics, abundant surface liquid water, and a nitrogen-oxygen atmosphere strongly modified by life.
supportedInternal heat drives mantle convection and plate tectonics, which recycle crust and influence long-term carbon cycling.
supportedSeismic waves reveal internal layering, magnetic measurements map the dynamo-generated field, satellite geodesy measures plate motion, and atmospheric spectra determine gas composition.