Our solar system consists of an average star which we call the Sun, the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto. It includes: the satellites of the planets; numerous comets, asteroids, and meteoroids; and the interplanetary medium. The Sun is the richest source of electromagnetic energy (mostly in the form of heat and light) in the solar system. The Sun's nearest known stellar neighbor is a red dwarf star called Proxima …
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…and second smallest planet in the solar system. Its diameter is 40% smaller than Earth and 40% larger than the Moon. It is even smaller than Jupiter's moon Ganymede and Saturn's moon Titan. Ancient astronomers as the morning star and evening star once knew Venus, the jewel of the sky. Early astronomers once thought Venus to be two separate bodies. Thick swirling cloud cover veils Venus, which is named after the Roman goddess of love and beauty.