Why the path of planets is elliptical not circular?
Why the orbits of planets are elliptical and not circular?
Does the radius of elliptical orbit of planets, or satellites decrease with time? Why are the shapes of planets and stars spherical? Why aren't they square or any other shape? Why do all planetary systems orbit stars? Why is the orbital period of a satellite independent of its mass? Why don't planets have phases like the moon? Does a planetary orbit depend on the sun? Why does Uranus not orbit anticlockwise like the rest of the planets? Why doesn't Jupiter orbit the sun? Do all planets have to orbit a star? What is an orbital? What is an Orbital? How close can two or more Earth sized planets orbiting a small star come before they adversely affect each others’ orbits? Does rotation of planet depends on its radius? Why is the retrograde motion of planets observed? Why don't planetary orbits violate the law of conservation of energy? Where does the kinetic energy Come from? Does the gravity of the planets affect the orbit of other planets in our solar system? How do satellites stay in orbits and avoid each other? What is meant by orbital? Why is Earth rotating? According to string theory, why is earth rotating around the sun on an ellipse, while gravitation field of the sun should be almost perfect circle? How can you explain Uranus's tilted orbit using Einstein's view of gravity? Does the Milky Way orbit around anything? If so, what's its orbital period? Why can't we feel the momentum of the earth's spin, nor its orbit around the sun, nor the solar system's orbit around the Milky Way's center? Why is the earth round? Can a planet have an orbit shaped like a figure 8? Can two planets share the same orbit? Could a planet orbit two suns in a figure 8 pattern? Why are clouds round and curved in shape? Why can't they be squares or triangles? What equation of motion does the Earth follow while orbiting the sun? Why so? What is meant by a geostationary orbit?