Journey through the Solar System

The four terrestrial planets in the Solar System are Mercury, Venus, Earth, and Mars. They are mostly made of rock and metal.

The four giant planets in the Solar System are Jupiter, Saturn, Uranus, and Neptune. The gas giants Jupiter and Saturn are mostly made of hydrogen and helium, while the ice giants Uranus and Neptune are mostly made of volatile substances such as water, ammonia, and methane.

The inner Solar System planets refer to the four terrestrial planets, namely Mercury, Venus, Earth, and Mars. The outer Solar System planets refer to the four giant planets, namely Jupiter, Saturn, Uranus, and Neptune.

<p>The Solar System was formed 4.6 billion years ago from the gravitational collapse of a giant interstellar molecular cloud. The cloud formed the Sun and a protoplanetary disk that gradually coalesced to form planets and other objects.</p> Signup and view all the answers

<p>There are eight planets in the Solar System.</p> Signup and view all the answers