the.com/planetology
the science of judging entire worlds by their geology, and getting away with it
young fieldNamed only in the 1940s, before any probe left Earth
cross-disciplineBlends geology, chemistry, physics, and a little detective work
comparative trickEarth's rocks decode Mars, Venus, and distant moons
habitability huntMaps which worlds could host life, present or past
deep timeReads billions of years in a single layered cliff