A galaxy is a large, sprawling space system. It contains millions of stars, dust, interstellar gas, stellar remnants and dark matter all held together by gravity. There are many questions regarding whether solar systems can exist outside galaxies. Some of these questions have been answered. But there are still some questions that astronomers have not […]
Galaxies are large collections of stars, stellar remnants, interstellar gas, dust, and dark matter bound together by gravity. They range in size from dwarf galaxies with a few million stars to supergiants with one hundred trillion stars. The Solar System orbits around the Sun in our Milky Way galaxy. It contains planets, moons, and asteroids.
Our solar system is just a small part of the billions of galaxies that make up the universe. Every galaxy has its own set of stars, planets, and other celestial objects that orbit it. These things all orbit around the center of the galaxy, which is where the gravity forces them to move in a