|The solar system is made up of two parts:|
|The inner solar system contains Mercury, Venus, Earth and Mars. These four planets are closest to the Sun.|
|The outer solar system contains Jupiter, Saturn, Uranus and Neptune|
|The inner planets are
separated from the outer planets by the Asteroid
How big are they?
As you might expect, dwarf planets are smaller than major planets. Even Earth's Moon is bigger than the dwarf planets.
- Earth is 7,926 miles in diameter.
- Earth's Moon is about 2,100 miles in diameter.
How far away are they?
Earth is third outward from the Sun. Neptune is eighth. Pluto is ninth. Now, Pluto is downgraded in its classification to dwarf leaving only eight planets of the Solar System described as major.
Earth is only 93 million miles from the Sun, while Pluto's average distance from the Sun is 3.6 billion miles. At 9.7 billion miles, Eris is three times farther from the Sun than Pluto.
Neptune's diameter is about 30,775 miles.