Most if not all of Jupiter's outermost "moons" appear to be
A) relatively small rocks or icy debris left over after the formation of the rest of the Jovian moons.
B) spherical, about the same size as and similar to Earth's Moon or Mercury.
C) loosely bound collections of fine dust grains held together by electrical forces similar to static electricity on Earth.
D) small planetesimals captured by Jupiter.

Question

Quizplus · Accepted Answer

Jupiter's outermost moons are believed to be small planetesimals that were captured by the planet's strong gravitational field. These moons are typically irregularly shaped and much smaller than the larger, more spherical moons closer to Jupiter.

Most If Not All of Jupiter's Outermost "Moons" Appear to Be