SOLAR SYSTEM

Detailed explanation-1: -Of the terrestrial (rocky) planets of the inner solar system, neither Mercury nor Venus have any moons at all, Earth has one and Mars has its two small moons. In the outer solar system, the gas giants Jupiter and Saturn and the ice giants Uranus and Neptune have dozens of moons.

Detailed explanation-2: -This means that the more massive a body is, the more gravity it has. But also, the farther you go away from it, the less gravity you experience. For a short answer: The giant planets have more moons than the terrestrial planets because of their great masses which result in stronger gravitational fields.

Detailed explanation-3: -In the Solar System, most planetary-mass moons (such as Titan, Triton, and Enceladus) and many dwarf planets (such as Pluto and Eris) have such a composition. Europa is sometimes considered an icy planet due to its surface ice, but its higher density indicates that its interior is mostly rocky.

Detailed explanation-4: -The planets Mercury, Venus, Earth, and Mars, are called terrestrial because they have a compact, rocky surface like Earth’s terra firma. The terrestrial planets are the four innermost planets in the solar system.

Detailed explanation-5: -The Moon has a solid, rocky surface cratered and pitted from impacts by asteroids, meteorites, and comets.