Zeppelins would work on Mars as they do on earth, but there is less air. Also, Mars has high winds, which is an airship's biggest enemy. For an airship (m=25000kg) to float in our atmosphere, they need to follow Archimedes' Principle. How big would this airship have to be in order to float? Given that the density of Mars' atmosphere is 0.02 kg/m^3, how much larger would the airship have to be in order to float in the Martian atmosphere?