4. Galileo Galilei
He is the man who gave us the eyes to look beyond the skies. Galileo invented the telescope through which man discovered the hidden secrets of the universe, only a small percentage of which has been revealed to us to date. To think that the work of this man is the foundation upon which the current system of military intelligence is built gives us a weird pleasure. Do I need to mention that at the basis of NASA lie the discoveries and efforts of this man who existed centuries ago?!
