Asteroids and comets are generally composed of different stuff. They both orbit our sun, but, for the most part, reside in different parts of our solar system. Yet some rare objects display characteristics of both asteroids and comets.
The major planets in our solar system orbit, more or less, in a single plane. That’s why you can look for them along the same sky path traveled by the sun and moon. Is the same true for exoplanets in distant solar systems?