Comet nuclei, absent their tails, are very dark because
A) they are made of water ice.
B) they have iron and nickel mixed with ice.
C) they have organic molecules mixed with ice.
D) they are covered in rock.
E) they are too cold to emit any light.

Question

Quizplus · Accepted Answer

Comet nuclei are dark because they contain organic molecules mixed with ice, which absorb sunlight and make the surface appear dark.

Comet Nuclei, Absent Their Tails, Are Very Dark Because