The Galaxies Within

Understanding the Universes Building Blocks

What are galaxies? Definition and observation The sun, moon, and the millions of billions of stars that we see in the clear night sky are all part of a vast structure called a galaxy. Galaxies are the basic building blocks of the universe, and they contain stars, gas, dust, and dark matter. Our own galaxy, which we call the Milky Way, is a spiral shape and contains about 200 billion stars. The study of galaxies plays an important role in understanding the mysteries of the universe. By understand... (Læs mere)