Plants don't orbit anything - planets do.
Because stars have a greater amount of gravity
Moons orbit planets. Planets orbit stars. Some stars orbit other stars, or orbit their mutual center of gravity. Stars orbit the center of the galaxy. Galaxies may orbit the center of the "galactic group".
Gravity keeps the planets in orbit around the sun and the stars and the stars in orbit around the center of the galaxy. Gravity also holds the stars together against their own internal pressure.
They orbit as stars would in any other halo. It is gravity that causes everything to orbit and "spin around" Stars can also orbit around other stars called a binary orbit.
Various ways. Gravity of stars act on planets and cause them to rotate around them, as well as asteroids that get caught in gravity fields and fall to the plant's surface.
Gravity.
it keeps it in orbit
A planet
A planet is a large rotating body that is held in orbit by a star's gravity in a solar system.
The stars are said to be a "gravitational binary pair"
because the stars gravity pulls them in and holds them in orbit
That's called a double star.