There are eight planets in our solar system, which are celestial bodies that orbit around the Sun. The order of the planets in the solar system, starting nearest the sun and working outward is the following: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. The four large outer planets, Jupiter, Saturn, Uranus, and Neptune, are sometimes called the Jovian or "Jupiter-like" planets because of their enormous size relative to the terrestrial planets. They are mostly made of gases like hydrogen, helium, and ammonia rather than of rocky surfaces, although astronomers believe some or all of them may have solid cores.

Below is a brief overview of the eight true planets in our solar system, moving from that closest to the sun to the farthest from the sun:

• Mercury: The smallest planet in the solar system and the closest to the Sun. It has a heavily cratered surface and no atmosphere.

• Venus: The second planet from the Sun and similar in size and composition to Earth. It has a thick atmosphere that traps heat, making it the hottest planet in the solar system.

• Earth: The third planet from the Sun and the only known planet with life. It has a diverse environment and a protective atmosphere that shields life from harmful radiation.

• Mars: The fourth planet from the Sun and often called the "Red Planet" due to its reddish appearance. It has a thin atmosphere and a history of water on its surface.

• Jupiter: The largest planet in the solar system and fifth from the Sun. It has a thick atmosphere of hydrogen and helium and a large number of moons.

• Saturn: The sixth planet from the Sun and known for its distinctive rings made of ice and rock particles. It has a similar composition to Jupiter and also has many moons.

• Uranus: The seventh planet from the Sun and the first of the ice giants. It has a tilted axis of rotation that causes extreme seasons and a unique magnetic field.

• Neptune: The eighth planet from the Sun and the farthest known planet in the solar system. It is also an ice giant and has the strongest winds of any planet in the solar system.

There are also dwarf planets, moons, asteroids, comets, and meteoroids in our solar system.