Galaxies
Well, let's see....our Milky Way galaxy contains somewhere between two hundred and four hundred billion stars and scientists estimate there may be one hundred to two hundred billion (and perhaps as many as five hundred billion) galaxies in our universe... The expanse of our universe simply cannot be comprehended.
Galaxies come in all different shapes and sizes. Scientists have come up with 3 (very) broad categories, spirals, ellipticals and irregulars. The images on this page are mainly of spiral galaxies and their variations.
The fact that these images show how the galaxies looked 25, 50 or hundreds of millions of years ago is, to me, one of the most fascinating aspects of astrophotography...
