I'm not entirely sure but I would have to go with dark matter.
Exactly, that is what a galaxy is.
That is a galaxy.
A system of billions of stars held together by gravity is called a galaxy. The one we live in is called the Milky Way galaxy.
It is a galaxy.
it is a galaxy.
If they form a galaxy, it's called a galaxy of course.
A group of stars, gas, and dust held together by gravity is known as a galaxy. Galaxies come in various shapes and sizes and can contain billions to trillions of stars. Our own galaxy, the Milky Way, is a spiral galaxy containing around 100-400 billion stars. The gravitational forces within a galaxy keep its components bound together in a cohesive structure.
Galaxy
Galaxy
A galaxy.
Is called a galaxy
A galaxy