In a galaxy, there are stars, the stars' planets, and the planets' moons. There are comets, asteroids, gas, dust, emptiness. You'll find nebula (star-forming regions) and black holes. In most galaxies, there is one supermassive black hole in the center that holds the entire galaxy together.
who discovered the galaxies who discovered the galaxies
Spiral galaxies, barred spiral galaxies, elliptical galaxies, and irregular galaxies
The possessive form for the plural noun galaxies is galaxies'.Example: Their galaxies' paths do not coordinate.
Elliptical galaxies are sometime called dwarf galaxies.
15 Galaxies? There are over 1,000,000,000 galaxies possibly more.
no galaxies are not harmful
spiral galaxies (ours), irregular galaxies, and elliptical galaxies.
You can have dwarf elliptical galaxies.
Elliptical galaxies are large blob shaped galaxies that most galaxies will eventually look like. Elliptical galaxies are what happens when two or more large galaxies collide and coalesce.
there are a few kinds of galaxies in our universe.
A supercluster.
irregular galaxies