It traveled by hyperbolic orbits, not the straight lines of a high-booster.
Comets from interstellar distances would arrive on wide hyperbolic orbits.
Similar effects happen in closed and hyperbolic orbits.
The two most general cases with these 6 degrees of freedom are the elliptic and the hyperbolic orbit.
Objects in a hyperbolic orbit can escape from the solar system altogether.
Others, such as time-of-flight are far more complicated, especially for near-circular and hyperbolic orbits.
They intended to come within one mile of the surface in a hyperbolic orbit.
We're falling free, in a hyperbolic orbit around the pulsar.
A majority of comets have either parabolic or hyperbolic orbits.
Say, a hyperbolic orbit clear out of the solar system.