The solar system is a real and observable phenomenon that consists of the sun, eight planets, dwarf planets, moons, asteroids, comets, and other celestial bodies. The sun is at the center of the solar system, and the planets and other objects orbit around it in a roughly circular path due to the sun's gravitational pull.

The eight planets in the solar system are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. These planets vary in size, composition, and other characteristics. The four inner planets, including Mercury, Venus, Earth, and Mars, are rocky and have solid surfaces, while the outer planets, including Jupiter, Saturn, Uranus, and Neptune, are gas giants and have no solid surfaces.

Dwarf planets, such as Pluto, are also part of the solar system. They are smaller than the eight planets but larger than asteroids. Moons, or natural satellites, orbit around planets and dwarf planets. Asteroids are small rocky bodies that orbit around the sun, while comets are icy bodies that also orbit around the sun.

The reality of the solar system is supported by a large body of scientific evidence, including astronomical observations, measurements, and theories. The solar system has been studied extensively by astronomers and space agencies, and our understanding of it continues to evolve as new discoveries are made.