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A comment on LightSail 2 Spacecraft Successfully Demonstrates Flight by Light. Parent comment
The variable here is d (the distance between the centres of mass) - gravity is inverse quadratic (https://en.wikipedia.org/wiki/Inverse-square_law), not exponential.
The variable here is d (the distance between the centres of mass) - gravity is inverse quadratic (https://en.wikipedia.org/wiki/Inverse-square_law), not exponential.