The History of Astronomy Part 4

Galileo and Newton are some of the most famous names in the history of Astronomy. Here is a movie about what they did:

http://videos.howstuffworks.com/hsw/23315-the-history-of-astronomy-galileo-and-newton-video.htm

Read more about Galileo here: http://www.pbs.org/wnet/hawking/cosmostar/html/cstars_galileo.html

Read more about Newton here: http://www.pbs.org/wnet/hawking/cosmostar/html/newt.html