The most likely origin of the "dirty snowballs" that become long-period comets when deflected into orbits bringing them closer to the Sun is the
A) Oort cloud surrounding the solar system.
B) surfaces of the moons of Jupiter and Saturn.
C) gas clouds in the Milky Way.
D) asteroid belt.

Question

Quizplus · Accepted Answer

The Oort cloud is a hypothesized region surrounding the solar system that is thought to contain trillions of icy objects, including the "dirty snowballs" that become long-period comets when they are deflected into orbits bringing them closer to the Sun.

The Most Likely Origin of the "Dirty Snowballs" That Become