A galaxy is a big assembly of stars, gas, and dust that is held together by gravity. They come in different shapes and sizes and contain billions to trillions of stars. Our own galaxy is called the Milky Way.
This represents a galaxy, which is a massive collection of stars, gas, dust, and other celestial objects bound together by gravity. The Milky Way is an example of a galaxy that contains millions of stars, along with interstellar gas and dust.
This describes a nebula, which is a vast cloud of gas and dust in space where stars are born. The gases and dust within a nebula are the raw materials that eventually come together under gravity to form new stars.
A group of stars that form when a lot of gases and dust come together is called a star cluster. Star clusters can be either open clusters, which are loosely bound and contain young stars, or globular clusters, which are tightly bound and contain older stars.
A cluster of stars and a nebulae together is often referred to as a stellar nursery. These regions are where new stars are born out of clouds of dust and gas.
The answer is simple: gravity.
Galaxy
A galaxy.
A galaxy is a big assembly of stars, gas, and dust that is held together by gravity. They come in different shapes and sizes and contain billions to trillions of stars. Our own galaxy is called the Milky Way.
That is a galaxy.
a galexy
A galaxy
Is called a galaxy
This represents a galaxy, which is a massive collection of stars, gas, dust, and other celestial objects bound together by gravity. The Milky Way is an example of a galaxy that contains millions of stars, along with interstellar gas and dust.
This describes a nebula, which is a vast cloud of gas and dust in space where stars are born. The gases and dust within a nebula are the raw materials that eventually come together under gravity to form new stars.
A group of stars that form when a lot of gases and dust come together is called a star cluster. Star clusters can be either open clusters, which are loosely bound and contain young stars, or globular clusters, which are tightly bound and contain older stars.
Gravity - from the stars, dust, etc., but especially from "dark matter", a substance of yet unknown composition.