Galaxies ARE groups of stars. Lots of stars though. Not just like 2 or 3...
Galaxies are the massive collection of stars. Therefore galaxies could not have formed without stars.
Galaxies are vast collections of stars. So I guess you could say that a big group of stars forms a galaxy. Our galaxy has many big clusters of stars within it, so not all star clusters are galaxies. If you have a cluster of several million or billion (or trillion) stars surrounded by a lot of empty space, that is probably a galaxy.
Milky way!
The other planets, stars, galaxies, meteors, comets, and asteroids.
Stars, planets, moons, comets, asteroids and other phenomena.
No - without gravity, galaxies would not have formed, planets would not have formed, stars would not have formed.
Groups at different scales (from smaller to larger) are called:* Multiple stars (two or more stars that are gravitationally bound) * Star clusters * Galaxies * Galaxy clusters * Superclusters
No stars are actually a galaxy. All stars are stars and all galaxies are galaxies. Stars are found in galaxies. Some galaxies look like tiny dots in our night sky, so might look like a star, but they are not stars; they are galaxies.
Galaxies are vast collections of stars, gas, dust, and dark matter, with each galaxy containing billions to trillions of stars. Solar systems are specific groups of celestial bodies, including a star and its orbiting planets, moons, asteroids, and comets, that exist within galaxies. Thus, stars are the building blocks of solar systems, and both stars and solar systems are integral components of galaxies. In essence, galaxies are the larger structures that house numerous stars and their respective solar systems.
All stars and galaxies are in the universe.
The answer is portons and neutrons nonetheless join up together and make a bang then they are formed into galaxies and stars.
Elliptical galaxies may vary in shape form but are spherical or flattened disk-shaped galaxies (large groups of stars). See related link for a pictorial.