Earth has one moon, and Mars has two moons named Phobos and Deimos. However, the outer planets Jupiter, Uranus, Saturn and Neptune have many moons. Jupiter has 50 discovered moons while Saturn has 53 known satellites. Neptune and Uranus have 13 and 27 moons, respectively.
Since ancient times, different civilizations knew about the planet Venus. Dating back to the 17th century B.C., the Babylonians were the first to give a record of Venus. Being a terrestrial planet, Venus has a core, mantle and crust. However, its average surface temperature can be as high as 864 degrees Fahrenheit.Learn more about Planets