A bit of subject change.
Have you heard about a drone for Mars mission ?
On Mars, despite you get 1/3 of gravity, you have 1/100 of atmospheric pressure.
And sun's power, for sollar cells, it's 50% than on Earth.
But NASA will build a drone, mini helicopter, for Mars. Imagine the energy for blades rotation at 1/100 of air presure, despite 1/3 of gravity.
Someone will say that if blades run faster in a air pressure way lower, the energy to move the air would, in theory, be the same. But the key point it's the loss due friction, much more relevant in this case.