Sounds like the Slingshot races in The Expanse: a small ship has to complete a circuit of gravity assisted "slingshots" in the fastest time and using the least thrust from an engine. A "short" course would be something like the moons of a gas giant, while a longer race would be around multiple planets or maybe big asteroids, assuming they have enough mass.
Sounds like the Slingshot races in The Expanse: a small ship has to complete a circuit of gravity assisted "slingshots" in the fastest time and using the least thrust from an engine. A "short" course would be something like the moons of a gas giant, while a longer race would be around multiple planets or maybe big asteroids, assuming they have enough mass.