what are the contributions of astronomy?

Answer 1

Contributions to whom? When?

Answer 2

contributions to all of humanity up to right now.

Answer 3

http://library.thinkquest.org/29033/history/history.htm

http://casswww.ucsd.edu/archive/public/tutorial/History.html

Answer 4

Are some people really so lazy as to not to pick up a book or 'google' something?

Amazing!