The Sun's gravity pulls on the planets, just as Earth's gravity pulls down anything that is not held up by some other force and keeps you and me on the ground. Heavier objects (really, more massive ones) produce a bigger gravitational pull than lighter ones, so as the heavyweight in our solar system, the Sun exerts the strongest gravitational pull.
Because the sun moves around so when the sun moves around the light from the sun touches the planets
The planets are considered moving around the sun, even though the sun moves too (in tiny circles opposite the planets' motions). The planets are circling the sun. The sun (dragging the planets along with it) is circling our galaxy's center. Our galaxy (dragging the sun, the planets, and all the other stars) is moving through the universe as well.
The sun moves in straight line and the planets move around it in spiral way
planets and comets and asteroids
planets
The path where a planet moves around the sun is called an orbit.
Issac Newton shortly after discovering the gravity theory
How far is the earth to the sun?
Here is one: You can observe that the position of the Sun amongst the stars changes. So either the entire sky with all the stars moves around us, the Sun moves around the Earth, or the Earth moves around the Sun. Assuming that it is Earth that moves around the Sun is the simplest of the assumptions (in the older, geocentric, model, the other planets had complicated orbits around the Earth).
Each planet moves in its own elliptical orbit round the Sun, then and now.
Of the major planets, Neptune. The speed of planets in their orbits is directly related to their distance from the sun. The farther a planet is from the Sun, the slower its orbital speed.
it was very difficult to understand the retrograde motion of other planets if earth was considered to be at the center of the solar system but it could be easily explained if earth is considered to revolve around the sun along wit other planets. So explanation of retrograde motion of other planets made them realize that earth moves around the sun.