Knowra Planetary geology Planetary geology Planetary geology studies the surfaces, interiors, materials, and geological processes of planets, moons, asteroids, and other solid bodies. It uses geological evidence to reconstruct how these worlds formed and changed.
Impact cratering : The formation of craters and related landforms when impactors strike a solid body's surface. Crater shapes and densities expose impact histories and help estimate surface ages.
Planetary cartography : The mapping and measurement of planetary surfaces using images, topography, and spatial data. Maps organize landforms into patterns that suggest their origins and relative ages.
Lunar geology : The study of the Moon's materials, landforms, interior, and geological history. The Moon preserves ancient impact records and provides a nearby case for airless-body geology.
Comparative planetology : The comparative study of planets and moons to explain their shared and differing properties. It places geological observations across worlds into a common explanatory framework.
Volcanism : The eruption or emplacement of molten rock, gases, or other materials from a body's interior. Volcanic landforms show where planetary interiors have melted and resurfaced their crusts.
Remote sensing : The acquisition of information about an object without direct physical contact, often using reflected or emitted radiation. Most planetary geology begins with measurements made from orbit or Earth.
Martian geology : The study of Mars's surface, interior, materials, and geological history. Mars preserves evidence of volcanism, river activity, ice, and changing environments.
Earth geology : The study of Earth's materials, structure, history, and physical processes. Earth geology offers a familiar reference, but its active oceans and atmosphere have no exact planetary parallel.
Tectonics : The deformation and movement of a body's crust or lithosphere under internal or external forces. Faults, ridges, and folded terrain record stresses and interior dynamics beyond Earth.
Spectroscopy : The study of matter through its interaction with electromagnetic radiation across wavelengths. Spectral signatures help identify minerals and ices on distant surfaces.
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