Why do all planetary systems orbit stars?
Does a planetary orbit depend on the sun?
What does the sun orbit? Does the sun orbit the earth? Why doesn't Jupiter orbit the sun? Is the planet earth moving close to the sun with every orbit? How does the earth orbit the sun without losing energy? How is the orbit of Mars around the Sun determined? What happens to a planetary system when its sun dies? Why is the earth's orbit around the sun almost circular? Is the sun considered a planet? Why or why not? Does the gravity of the planets affect the orbit of other planets in our solar system? The planets revolve around the sun without losing energy when gravitational force is acting on them .why? Could a planet orbit two suns in a figure 8 pattern? Why isn't the Sun orbiting Earth? Which direction does the earth rotate and orbit the sun? How close can two or more Earth sized planets orbiting a small star come before they adversely affect each others’ orbits? Is it possible for a star to orbit a planet?  Has it ever been observed? What effect do the other planets in the solar system have on Earth? Do stars revolve around the sun in our solar system? How big would the sun look on other planets? Can a satellite be made to orbit so that it is constantly directly between the earth and the sun in a way that would allow it to always observe the sunny side of the planet? RE Polaris: Is it possible that an out of view planet’s orbit is in a gravitational suspension between Suns due to a multiple pull of gravity effect? How earth revolves around the sun? Can two planets share the same orbit? How far is Jupiter from the Sun and how does its proximity affect the planets characteristics? How close are the planets of our solar system to being in the same orbital plane? Can we theoretically make a compact artificial sun in space travel? What happens if the earth revolves around the sun anticlockwise? When Sun start expanding and starts pulling the planets towards it,will there be a chance for other planets like Saturn or Uranus to become habitable? Would it be possible for a planet to orbit two stars in a figure eight pattern? Why does the earth revolve around the sun?