Saturn
Uranus
Diameterkm
116,460
50,724
Mass (Earth = 1)x
95.16
14.54
Surface Gravitym/s²
10.44
8.87
Mean Temperature°C
-140
-220
Distance from SunAU
9.54
19.19
Orbital Perioddays
10,747
30,589
Day Lengthhours
10.66
17.24
Known Moons
146
28
Axial Tilt°
26.73
97.77
Orbital Velocitykm/s
9.68
6.80
Quick Facts
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.
Uranus
- -Uranus rotates on its side with an axial tilt of 97.77°, likely caused by a massive ancient collision.
- -Uranus was the first planet discovered with a telescope, found by William Herschel in 1781.
- -All 28 of Uranus's moons are named after characters from Shakespeare and Alexander Pope.
- -Uranus's blue-green color comes from methane in its atmosphere absorbing red light.