Jupiter
Uranus
Diameterkm
139,820
50,724
Mass (Earth = 1)x
317.80
14.54
Surface Gravitym/s²
24.79
8.87
Mean Temperature°C
-110
-220
Distance from SunAU
5.20
19.19
Orbital Perioddays
4,331
30,589
Day Lengthhours
9.93
17.24
Known Moons
95
28
Axial Tilt°
3.13
97.77
Orbital Velocitykm/s
13.07
6.80
Quick Facts
Jupiter
- -Jupiter's Great Red Spot is a storm large enough to swallow Earth and has been raging for at least 350 years.
- -Jupiter has the shortest day of any planet -- it completes one rotation in just under 10 hours.
- -Jupiter's magnetic field is about 20,000 times stronger than Earth's.
- -Europa, one of Jupiter's moons, likely has more water in its subsurface ocean than all of Earth's oceans combined.
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.