The only planet we know of inhabited entirely by robots.

24h 37m
Length of day

2 moons
2 moons & Phobos Deimos
The space potatoes

3 times
the Mount Everest
The size of Mount Olympus, the highest mountain of Mars
The fourth planet from the Sun and the second-smallest planet in the Solar System. Mars carries the name of the Roman god of war and is often referred to as the "Red Planet".
The latter refers to the effect of the iron oxide prevalent on Mars's surface, which gives it a reddish appearance striking among the astronomical bodies visible to the naked eye.