This is known as an orbit. An orbit consists of 365 days, which is a year in our calendar.
Apparent retrograde motion.
In planetary terms, when referring to the motion of planets and moons etc. the motion is describes as orbiting. Moons are on orbit around planets, while the planets are in orbit around the sun. An orbital motion.
The motion of the planets are elliptical motions
Gravity, which pulls an object inward, and inertia, which resists gravity. They combine to form a more-or-less circular orbit.
Orbital motion is a balancing of gravity and the centripetal reaction force of not traveling in a straight line.
planets dont "switch" orbit, but there are those that orbit each other, and those, like mars, that have retrograde motion, which makes it appear to orbit backwards
Orbit
the sun
Orbit
Gravity combined with the object's "sideways" (tangential to its orbit) motion. The Sun "wants" to pull the object towards it and the object "wants" to fly of into space. When these two things are balanced the object is in a stable orbit.
The motion is an orbit. The two bodies take up elliptical orbits about their common centre of mass. When one body is far more massive, like the Sun, it hardly moves and the lighter object (a planet) does all the dashing about.
All of them, when the Earth overtakes them in its orbit.
the orbit cause it.
An Orbit.
an orbit
An Orbit.