Question

A. The Voyager missions have discovered that the moons of planets are not geologically inactive. For example, Io, one of Jupiter's moons, has active volcanoes.

b. Saturn has more than three rings. In fact, it has thousands of rings made up of countless ringlets and divisions.
c. Jupiter has far more than eleven moons. As of the last count before my knowledge cutoff in 2021, it had at least 79 known moons.
d. Saturn is not the only planet with a ring. Uranus and Neptune also have ring systems, although they are less prominent than Saturn's.

Answer 1

The subject of this question is astronomy, specifically the moons and rings of the jovian planets in our solar system.

Step-by-step explanation:

The subject of this question is astronomy, specifically the moons and rings of the jovian planets in our solar system.