  The Lambert problem consists in connecting two given points in a given lapse
of time under the gravitational influence of a fixed center. While this problem
is very classical, we are concerned here with situations where friction forces
act alongside the Newtonian attraction. Under some boundedness assumptions on
the friction, there exists exactly one rectilinear solution if the two points
lie on the same ray, and at least two solutions travelling in opposite
directions otherwise.

Dynamical Systems