Since humankind first learnt how to stand upright, we have craned our necks upwards and wondered what secrets lay beyond the lights in our skies. Thanks to famous astrophysicists such as Galileo Galilei, Sir Isaac Newton, Edwin Hubble, Carl Sagan, Stephen Hawking and many others; we have a better understanding of the greater workings of our Universe than we ever have before, and our knowledge of the vast cosmos grows with every day. 370 more words