What is heliocen?

What is the physics behind an eclipse? What are 5 different types of rockets? How many stars are in the constellation Hercules? What is the order of the planets from the sun out? What was the name of the first satellite launched and which country did it belong to? How do the relative motions of the earth sun and moon lead to eclipses? What zodiac sign am i if my birthday is October 8? What is the description of the current state of the atmosphere? How was the solar water heater originally used in space? Who were the astronauts on Apollo 7? If the earth rotates from the west to the east why do the sun and stars move from east towards the west? Is a star bigger than a universe? How far away can the hubble telescope see? What can Leo expect in terms of love and career opportunities this month based on their horoscope? Clouds are classified by their shape and what else? What scientist won a Nobel Prize for pioneering work in the study of the evolution of stars? Why did thales name the little dipper the little dipper? How heavy was the Apollo rocket? Is Poseidon Zeus' brother? What is an Apollo 17 18 CT commemorative coin worth?