The two planets that spin in the opposite direction of most planets in our solar system are Venus and Uranus.

* Venus rotates from east to west, which is the opposite of Earth and most other planets.

* Uranus spins on its side, almost completely tilted on its axis. It's not exactly spinning backward, but its rotation axis is so tilted that it effectively spins on its side.

Let me know if you'd like to know more about these planets!