What is believed to be the origin of the moons of Mars?
A) They formed when a body the size of the Earth impacted with Mars early in its history.
B) They formed from material ejected from Olympus Mons and other large volcanoes on Mars.
C) They are escaped moons of Saturn.
D) They are captured asteroids.

Question

Quizplus · Accepted Answer

The moons of Mars, Phobos and Deimos, are widely believed to be captured asteroids. This theory is supported by their irregular shapes and composition, which closely resemble that of C-type asteroids found in the outer parts of the asteroid belt.

What Is Believed to Be the Origin of the Moons