Also fun to note this argument from first principals could be levied against the Earth if it were just a bit bigger: "If our planet was 50% larger in diameter,

Also fun to note this argument from first principals could be levied against the Earth if it were just a bit bigger: "If our planet was 50% larger in diameter, we would not be able to venture into space, at least using rockets for transport." http://www.nasa.gov/mission_pages/station/expeditions/expedition30/tryanny.html http://www.nasa.gov/mission_pages/station/expeditions/expedi... One wonders if it were the case, if humanity would come up with a solution by necessity or we'd still be grounded. My guess is we'd have nuclear powered rockets.