Okay, I’ll concede Dictionary.com uses “earth” in almost every definition.
But what is the term for the ‘geology’ of Mars, if not geology?
Webster’s is not as specific:
a : a science that deals with the history of the earth and its life especially as recorded in rocks
b : a study of the solid matter of a celestial body (as the moon)
The prefix “ge” is specific to Earth; it’s a wonder that they didn’t come up with “selenology” for the moon.
ANSWER : Cometectomy for any material comming from comets !
ANSWER : 'Mars Bar' for anything comming from Mars !
And anything with chunks we will call it " Snickers" !
You can thank me later ...!!
Planetology.
The gas giants could probably give us an unlimited supply of water, methane and hydrogen. They probably gather more in their travels through space than we could ever use.