From perturbations in stellar movement, we assume that Alpha Centauri, the second closest star to Earth, probably has planets.
No. Stars are like suns, around which planets may orbit.
Planets orbit the sun. Stars do not.
On the contrary! A star has planets, which circulate it. And planets have moons. Stars do not circle planets.
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".
planets do not shine with their own energy but shine because of energy of stars. they revolve around stars
there are more planets than stars because to every star there could have several planets
These are planets that are in orbit around other stars, known as exosolar planets.
That doesn't make sense. There are stars, and there are planets. If you mean "planets around stars, other than the Sun", those are usually called "extrasolar planets" or "exoplanets".
Because the stars are relatively so far away, all planets of this solar system have the same number of stars near them.
around Earth!
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.
Yes. To date scientists have discovered well over a thousand planets orbiting other stars. It is believe that a large portion of the stars in the night sky have planets.