The consists of the and all the celestial bodies that are bound to it by gravity. This includes the eight planets, their moons, and various small objects like asteroids and comets. The four inner planets, known as the planets, are primarily composed of and metal, while the outer planets, or gas giants, have thick atmospheres composed mainly of and .
Each planet has unique characteristics that set it apart from the others. For instance, Earth is the only planet known to support , while Mars is famous for its reddish appearance due to iron oxide on its surface. The largest planet, Jupiter, has a more than 300 times that of Earth and features a prominent storm known as the Great Red Spot. Meanwhile, Saturn is renowned for its stunning , composed of ice and rock particles.
In addition to planets, the solar system is home to numerous dwarf planets, such as , which was reclassified from its former status as a planet. The Kuiper Belt, a region beyond Neptune, is populated by these small celestial bodies. The is a theorized area that may contain many comets and is located further out from the solar system, acting as a for the influence of our Sun.
Keywords
hydrogen | sun | helium | mass | oort cloud | terrestrial | rock | pluto | rings | solar system | life | boundary |
