TIL that Mars has only 10% the mass of the Earth.

http://www.universetoday.com/22603/mars-compared-to-earth/



Submitted January 19, 2015 at 07:53PM by simplequark http://www.reddit.com/r/todayilearned/comments/2sxpyj/til_that_mars_has_only_10_the_mass_of_the_earth/