Interior layer
Crust
The thin, rigid outermost solid layer of a rocky planet or moon — the product of differentiation and volcanism, and the surface on which its geological history is written.
Worlds, layers & processes
Across comparative planetology
Knowledge connections
- Associated withEarth
- Associated withMars
- Associated withVolcanism
- Associated withPlanetary Differentiation
- Associated withPlate Tectonics
- Associated withImpact Cratering History
Sources
The primary and reference sources this topic draws on.
- NASANational Aeronautics and Space Administration
Mission data, planetary science, space telescopes, and public-domain imagery.
Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.