557
All the land in our solar system
(imgs.xkcd.com)
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
this post was submitted on 05 Aug 2025
557 points (98.3% liked)
Map Enthusiasts
4871 readers
252 users here now
For the map enthused!
Rules:
-
post relevant content: interesting, informative, and/or pretty maps
-
be nice
founded 2 years ago
MODERATORS
I can't readily recall the Earth's actual sq. km surface area, and can't remember ever having heard the figure for Mars. Time to drop into Wikipedia and take a gander, I think.
EDIT: I'll be damned, TIL that the Earth has an area of 510.06 10^6 km², but Mars' is only 144.37 10^6 km², only about 1⁄3 the size (28.3%).
The circumference is roughly 40,000 kilometers. The original definition for a meter was such that 10,000 kilometers was the distance from the equator to the poles (so a quarter of the circumference). They got the math slightly wrong and didn't want to people to think the process was wrong so they didn't correct it. I forget the actual circumference but that is close enough for very rough estimates.
the distance from the equator to the poles is a quarter of the circumference
Yeah idk why I got circumference and diameter mixed up. Whoops.
Pebble