The second image seems to be a ballistic capture leveraging weak stability boundaries in a 3 body problem. It's the kind of transfer used by many spacecrafts t

The second image seems to be a ballistic capture leveraging weak stability boundaries in a 3 body problem. It's the kind of transfer used by many spacecrafts to get to the moon nowadays (hohmann transfers are only the most efficient in 2 body problems). Further reading: https://en.wikipedia.org/wiki/Weak_stability_boundary#Applications https://en.wikipedia.org/wiki/Weak_stability_boundary#Applic... Edit: Also https://www.gg.caltech.edu/~mwl/publications/papers/lowEnergy.pdf https://www.gg.caltech.edu/~mwl/publications/papers/lowEnerg...