Comets are made up primarily of _________.
A) frozen hydrogen
B) silicate minerals, like rocks on Earth
C) iron- nickel alloys
D) frozen water, carbon dioxide, and methane

Question

Quizplus · Accepted Answer

Comets are primarily made up of frozen water, carbon dioxide, and methane, along with some dust and rocky materials. This is why they are often referred to as "dirty snowballs." Some comets may also contain small amounts of frozen hydrogen and/or nitrogen.

Comets Are Made Up Primarily of _________