Our solar system has eight planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. There are five officially recognized dwarf planets in our solar system: Ceres, Pluto, Haumea, …

These four planets are part of the inner Solar System. Earth and Mars are the only planets that orbit within the Sun's habitable zone, in which sunlight can keep surface water liquid under atmospheric …

Discover the order of planets in the solar system. From Mercury to Neptune, explore our solar system and learn more about our cosmic home.

Explore the Solar System and learn the planets in order, including their moons, photos, fun facts, and statistics.

Every planet in the solar system lives under the Sun’s rule. Closest to the Sun lie four rocky planets known as the terrestrial planets. These worlds are relatively small compared to the outer giants, but …

There are eight planets in the solar system. The four inner terrestrial planets are Mercury, Venus, Earth, and Mars, all of which consist mainly of rock. The four outer planets are Jupiter, Saturn, Neptune, …

An interactive exploration of the planets, moons, asteroids, and other objects in the Solar System.

Our planetary system is the only official solar system in the Universe, but astronomers continue to find thousands of other stars with planets orbiting them in our galaxy.

Planets of the Solar System, their order by size and distance from the Sun and facts about the rocky terrestrial worlds and the gas giants.

The Nine Planets is an encyclopedic overview with facts and information about mythology and current scientific knowledge of the planets, moons, and other objects in our solar system and beyond.