Earth
Saturn
Diameterkm
12,742
116,460
Mass (Earth = 1)x
1.00
95.16
Surface Gravitym/s²
9.81
10.44
Mean Temperature°C
+15
-140
Distance from SunAU
1.00
9.54
Orbital Perioddays
365.25
10,747
Day Lengthhours
24.00
10.66
Known Moons
1
146
Axial Tilt°
23.44
26.73
Orbital Velocitykm/s
29.78
9.68
Quick Facts
Earth
- -Earth is the only planet not named after a Greek or Roman deity.
- -Earth's rotation is gradually slowing -- days are getting about 1.4 milliseconds longer per century.
- -About 71% of Earth's surface is covered by water, but 96.5% of that water is in the oceans.
- -Earth's magnetic field has flipped its polarity hundreds of times over millions of years.
Saturn
- -Saturn is less dense than water (0.687 g/cm³) -- it would float in a bathtub large enough to hold it.
- -Saturn's rings are mostly ice and extend up to 282,000 km from the center, but are only about 10 meters thick.
- -Saturn has 146 confirmed moons, the most of any planet in the solar system.
- -Winds near Saturn's equator can reach 1,800 km/h -- the fastest in the solar system.