it keeps it in orbit
A galaxy is made up of all sorts of matter, including stars. Many stars have object orbiting them, such as planets, asteroids, and even other stars. Solar systems orbit the galactic centre of a galaxy. (Solar systems don't orbit a galaxy, they ARE the galaxy)
Because the stars are relatively so far away, all planets of this solar system have the same number of stars near them.
Planets outside our solar system are called exoplanets. Thousands of exoplanets have been discovered orbiting other stars in the Milky Way galaxy. They come in a variety of sizes and compositions, and many are quite different from the planets in our own solar system.
Comets, solar flares, asteriod belt, stars
There are eight planets in our solar system. However, in the entire cosmos, there are billions of planets that orbit stars in other solar systems.
gravity of course
A solar system comprises a star (or combination of gravity bound stars) and their orbiting planets. We think the majority of stars are solar systems an we have detected planets orbiting stars other than the Sun. However in the process of forming a solar system we believe that planets my be permanently ejected from orbiting their stars and flung off into interstellar space. These planets would therefore indeed be outside any solar system.
The Solar System Makes the planets and the Stars.
No, the solar system is not a galaxy. The solar system is a small part of the Milky Way galaxy, which is a collection of billions of stars, planets, and other celestial objects held together by 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".
The part of the Moon which receives......can be seen from the Earth.
In *my* solar system, galaxies play no role, as my solar system is just one of many solar systems that make up our galaxy. A single star, which we call the Sun, is the most massive object in our solar system and, to a pretty good approximation, all of the planets in our solar system orbit around the Sun. What are the roles of the galaxies, stars, and planets in *your* solar system?
solar system
the solar system is made up with space rocks, stars, moons, and planets.
There is no doubt that planets, stars, and solar systems could not ever have formed without gravity. All of these astronomical objects condensed out of clouds of interstellar gas and dust, under the influence of gravity. It is also true that planets orbit stars only because of the gravitational attraction of those stars.
Solar System
Polaris is a star. It is likely that it has planets, i.e. that there is a related solar system, since most stars seem to have planets.