Pluto does not enter the orbit of Neptune. While their orbits do intersect, they are not on a collision course, and Pluto never actually crosses into Neptune's orbital path.

Here's why:

* Orbital Resonance: Pluto and Neptune are in a 3:2 orbital resonance. This means that for every three orbits Pluto makes around the sun, Neptune completes two. This resonance helps to stabilize their orbits and prevents them from colliding.

* Tilted Orbits: While their orbits intersect, they are tilted at different angles. Pluto's orbit is significantly more inclined than Neptune's. This tilt prevents them from actually coming close to each other, even when their orbits intersect.

Imagine two cars on a racetrack: One car is on a straight, level track, while the other car's track is tilted and goes up and down. Even though the cars might cross paths on the track, the tilt of the second car's path means they won't actually crash into each other.

In summary: Pluto and Neptune's orbits are carefully balanced and avoid collisions due to their orbital resonance and different orbital inclinations.