Gravity holds a galaxy together.
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.
A galaxy is a single vast interstellar region held together by a huge gravitational field.
It is a galaxy.
it is a galaxy.
Item: galaxy. The other items are celestial bodies within a galaxy, while a galaxy is a collection of stars, dust, and gas held together by gravity.
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.
A star and a galaxy are two distinct astronomical entities. A star is a luminous sphere of plasma held together by gravity, while a galaxy is a large system of stars, gas, and dust held together by gravity.
Galaxy
No. The galaxy is held together by the mutual gravity of every object in the galaxy. The central black hole accounts for only a tiny fraction of that mass.