How long does it take the Earth to spin on it exis?

Cite examples of astronomical phenomena known to astronomers before the advent of telescope? Why are some objects easier to see than others? Why is the moon comes out only at night? Why moon don't have gravety? When a stalactite meets a stalagmite the result is a? What makes Zeus mad? Why are magellanic clouds described as nearby? Do vampires live in sunny or cloudy places? Is horizon a on top or is horizon b on top? What happens you combine all three primary colors of light? What is the glonass? What is the third largest planet in space? What planet is named after the Roman god if the underworld? How much did the Greek god Zeus weigh? What are some sources of light (luminous)? Can it rain everywhere on earth at the same time? What direction moon orbit around earth? During a lunar eclipse, what phase is the moon in? Where did the Big Bang start and how did it shape the universe? What to elements are the main components of the sun?