1. Our Solar System
Made of 8 planets, 1 star (Sun), >100 moons, asteroids, comets, etc.
Huge distances between all of these so mainly empty space, space is a “vacuum”.

2. The Inner “Terrestrial” Planets
The four innermost planets
Terrestrial means Earth like
Relatively small and dense
Rocky, iron and silica rich
3 moons total
2 with atmospheres, 2 without

3. Solar System Scale

4. The Outer “Jovian” Planets
Planets 5-8 from the Sun
Jovian means Jupiter like
Also known as gas giants due to large size and the fact that they are composed of mostly gases
Very low density, close to that of Sun
More moons

6. The Sun – an average star
Yellow dwarf/Main sequence star
4.6 BYO
5,5000C surface temperature/15,000,000 0C core
Consists of 75% hydrogen and 25% helium
Largest object in S.S.
Makes up 99.8% of S.S. by mass.
1,300,000 Earth's can fit inside the Sun

10. Moons – planet like bodies that revolve around planets
Mercury 0
Venus-0
Earth-1 Mars-2 Jupiter-63 Saturn-60 Uranus-27 Neptune-13

11. Asteroids- Small chunks of rock left over from solar system formation
30,000 asteroids lie in a belt between Mars and Jupiter
Possibly an old planet that got broken up

12. Comets- chunks of ice and dust.
Orbit the sun in exaggerated elongated paths. High “e”
Most go beyond the path of Neptune.
Tail caused by solar wind and always faces away from Sun