Final answer:
There are eight major planets in our solar system, which also includes dwarf planets and moons. The major planets orbit the Sun in a nearly flat plane.
Step-by-step explanation:
There are eight major planets within our solar system. These planets include Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. In addition to these major planets, our solar system also contains half a dozen dwarf planets such as Pluto, Eris, Haumea, Ceres, and Makemake, and numerous smaller objects that orbit the Sun. The four giant planets, which are Jupiter, Saturn, Uranus, and Neptune, all have their own moons circling around them, resembling miniature solar systems, with nearly 200 moons being known in the outer solar system as of now. While we continue to discover exoplanetary systems with varying numbers of planets, our own solar system is home to eight major planets orbiting the Sun in roughly the same plane.