Billions upon billions of stars clumped together – these are the galaxies. There are countless galaxies in our universe, here you can view some of them.
A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and dark matter. Galaxies range in size from dwarfs with just a few hundred million stars to giants with one hundred trillion stars, each orbiting its galaxy’s center of mass. Recent estimates of the number of galaxies in the observable universe range from 200 billion to 2 trillion or more, containing more stars than all the grains of sand on planet Earth.