SOLAR SYSTEM The eight planets are: mercury, venus, earth, mars, jupiter, saturn, uranus, and nuptune. unlike star, planets do not shine under there own power , but simply reflect the light of there star. The sun, the moon, the earth, and the milky way are the only clelestial bodies that require the article (as far as i can remember). if you insist on including pluto, it would come after neptune on yhe list solar system planets:order of the 8 (or 9) planets. when the robotic probe new horizons flew past pluto in 2015 it took enough photos to give us a good look the dwarf planet's colur. it turned out that mostly shades of reddish brown. the solar system consists of 8 planets and one sun. the moon , the sun and all those object shining in the night sky are called celest...