What keeps planets hanging in space?
What keeps stars or planets stable?
Why do the stars at night appear to be stationary when Earth is spinning so fast? Do stars revolve around the sun in our solar system? Do stars and planets really affect human lives according to astrology? How? When far away from a star, is the space temperature stable? How much? What are stars made of in order for them to shine? Are stars alive? What are stars made of? Astrology: What is the connection between staying hungry (fasting) and the position of planets? Does a planetary orbit depend on the sun? Are there any stars that are big enough to eventually go Nova and close enough to Earth to wipe out all life here in such a case? What is the principle behind why celestial objects like planets do not collapse into the gravity of the sun but revolve around it? Could stars be considered alive? Why do outer stars in galaxies rotate so quickly? What are stars made out of? Can stars move? If not, why? Are there more stars in the universe or grains of sand on earth? Why do stars orbit in our galaxy at the same speed? Is it possible for a star to orbit a planet?  Has it ever been observed? What happens to a planetary system when its sun dies? What effect do the other planets in the solar system have on Earth? If four stars were orbiting each other, would they need to be orbiting on the same plane? What star system is Earth located in? How many solar systems are capable of supporting life? Are stars moving? If so, at what time and why? Why are gas giants like Jupiter not able to become stars? Is it possible to sustain life in other planets? Why do some stars become neutron stars instead of black holes? Why does the moon revolve around the sun? Why are solar systems and galaxies flat? What is the circulatory system of a sea star composed of?