View source for Three body patched trajectories

The most basic orbital mechanics considers the Newtonian interactions between two uniform density bodies traveling though a vacuum under there own inertia. This is known as the two body problem and it is the basis of classical transfer orbits like the [[hohmann trajectory]].

The three body is mathematically more interesting  and contains equilibrium points (Lagrange points), and [[manifolds]]. The three bodies could be for instance, the sun earth and a space craft or earth moon and a space craft. It turns out that spacecrafts can travel along these manifolds with a minimal expenditure of energy. Some have compared these manifolds to highways and attached the word [[interplanetary superhighway]] as the name to the roots that these manifolds create. 
==A more general topic==
[[Orbital mechanics]]