What are comets made of?
A) ice and some rock
B) ice
C) high magnesium and iron rocks
D) nickel-iron
E) close-packed hydrogen

Question

Quizplus · Accepted Answer

Comets are primarily made up of ice (frozen water) and some rock. These materials are believed to have formed in the outer parts of the solar system and were incorporated into the comet during its formation. As the comet approaches the sun, the ice begins to melt and release gas and dust, which create the characteristic coma and tail seen from Earth.

What Are Comets Made Of