Saturn ♄
- 10 AU from the Sun
- Takes nearly 30 years to orbit the Sun
- Low density ($0.7 g/cm^3$)
- Light enough to float in water (less dense)
- Although it isn't solid so it wouldn't actually float
- Lowest of any planet
Moons
- Very thin
- 270 million metres x 20 m
- Collisions act to smooth everything out
- Icy rocks
- Typically the size of ping-pong balls, tennis balls, and basketballs
- Some gaps from moons
- It's unlikely the rings were a destroyed moon
- Being close to Saturn's tidal forces prevents the formation of larger bodies
- E ring appears to be continually replenished by Enceladus
Space Astronomy Jovian Planet Planet