The Solar System.
The Geocentric Theory states that the Earth is the center of the universe, and that all other objects orbit around it. The Heliocentric Theory states that the Sun is the center of the universe, and all other objects orbit around it. Of course, the Heliocentric Theory is correct, since all astronomical objects orbit around the Sun.
The Solar System!!
The Solar System!!
Saturn's rings are made up of many small objects, rock and ice, that are in orbit around Saturn. Because all the object move, the rings can be said to move.
The sun
Galileo Galilei proved that objects in the solar system orbit around the sun, not the earth. He found this out by observing variations in venus's phases that could not be explained if all objects orbited the earth
Sedna, like all objects in our Solar System orbit the Sun. The Sun and thus everything else, also orbit around the central core of our Galaxy - The Milky Way.
The term used for the sun and the objects that move around it is solar stem. This is what contains the other planets.
universe
There are many objects that orbit the sun: Planets (and all of their moons, totaling more than 61), the asteroids, comets, meteoroids, and other rocks and gas.
Pluto's is, and almost all of the comets' are.
Through gravitational pull. The largest object will have smaller objects orbit it (objects close in size will orbit each other, but no planet is close to the size of the sun)