This is our Solar System; formed about 4.6 billion year ago, it contains comets, planets, moons, etc. Our Solar System has 8 planets, in order from the closest to the Sun they are: Mercury, venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune.
| Planet name | Distance from the Sun in miles | Year Length | Day Length | Moons |
|---|---|---|---|---|
| Mercury | 36 million | 88 Earth days | 59 Earth days | 0 |
| Venus | 67 million | 225 Earth days | 243 Earth days | 0 |
| Earth | 93 million | 365 days | 24 hours | 1 |
| Mars | 142 million | 697 Earth days | 24 hours, 37 min. | 2 |
| Jupiter | 484 million | 12 Earth years | 10 Earth hours | 16 |
| Saturn | 888 million | 29 Earth years | 11 Earth hours | 18 |
| Uranus | 1.78 billion | 84 Earth years | 17 Earth days | 17 |
| Neptune | 2.8 billion | 164 Earth years | 16 Earth hours | 16 |
How big are the planets?
As shown in the picutre above the smallest planet is Mercury, which is also the closest to the Sun. Jupiter on the other hand is a huge compared to the rest.
The Center
right in the center of the solar system is the Sun, and all the planets are orbiting around it. Its a massive star, but compared to the rest of the universe. However it's big enough to fit about 1,000,000 Earths inside the Sun. Its roughly 92.96 million years old.