Edwin hubble biography nasal polyps

Edwin used the telescope at Mount Wilson to prove that other galaxies existed outside the Milky Way. Before this, the entire Universe was thought to exist within our galaxy. To do this, he compared the brightness of Cepheid variable stars in several nebulae. These are a kind of star that can be used to work out the distance to a lo

Edwin hubble biography nasal polyps pictures

Edwin hubble biography nasal polyps treatment

Edwin hubble pictures