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: -The planets orbit the Sun: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. The dwarf planets Pluto, Ceres, Makemake, Haumea, and Eris also orbit the Sun. Visit NASA Space Place for more kid-friendly facts.

Detailed explanation-3: -A satellite is an object that moves around a larger object. Earth is a satellite because it moves around the sun. The moon is a satellite because it moves around Earth. Earth and the moon are called “natural” satellites.

Detailed explanation-4: -The Sun’s mass makes up about 99 percent of the mass of the entire solar system. Planets, dwarf planets, asteroids, and comets orbit the Sun.