Mars
Saturn
Diameterkm
6,779
116,460
Mass (Earth = 1)x
0.11
95.16
Surface Gravitym/s²
3.72
10.44
Mean Temperature°C
-65
-140
Distance from SunAU
1.52
9.54
Orbital Perioddays
687
10,747
Day Lengthhours
24.66
10.66
Known Moons
2
146
Axial Tilt°
25.19
26.73
Orbital Velocitykm/s
24.07
9.68
Quick Facts
Mars
- -Olympus Mons on Mars is about 21.9 km tall -- nearly three times the height of Mount Everest.
- -A Martian day (sol) is 24 hours and 37 minutes, remarkably similar to an Earth day.
- -Mars has seasons like Earth because its axial tilt (25.19°) is very similar to Earth's (23.44°).
- -Dust storms on Mars can grow large enough to engulf the entire planet and last for months.
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.