Kepler
All of them
All planets have elliptical orbits.
Every planet, asteroid and comet in our solar system orbits the sun. The only natural body that orbits Earth is its moon.
All planets are in their orbits
All the planets except Venus and Mercury have moons.
All orbits are ellipses.
No, all the moons and rings rotate in the same plane as the planet itself.
moon Actually, anything that orbits a planet is called a satellite. Natural examples are moons, but man-made ones are things like the telescopes sent up from earth.
Yes, according to Kepler's laws of planetary motion, the orbit of each planet around the Sun is an ellipse with the Sun at one of the two foci. This means that the planet's distance from the Sun varies throughout its orbit.
NO. All the planets are in (more or less) fixed orbits.
It depends on what the object is. If it orbits a planet, then it is a moon. If it orbits the sun and is made of rock and/or metal then it is an asteroid or meteoroid depending on its size. If it is primarily made of ice then it is a comet. Dwarf planets are planet-like objects that do not meet all the criteria of a planet.
All the planets in the solar system orbit the sun.