Air transport breaks down

How much would the gravitational force (on earth) have to increase to make air-travel impractical (not impossible as escape by space flight to other planets would be a nice option). But to a point where the use of fixed winged aircraft becomes impractical as the energy required by propeller/jet engines becomes so costly (with current technology) that the amount required becomes impractical for commercial use.

If we know the gravitational force required to achieve the above. What would be the smallest asteroid strike to achieve this and could it be done with causing global collapse of civilization (maybe some local collapse). i.e strike at the center of Antarctica (melts ice but no dust cloud or tidal wave).

posted about 9 years ago

Martin York‭

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