How big is the Universe?
How did it begin?
How old is it?
You just happen to be alive during the time when humans are discovering the answers to these questions. Follow the arrows on these pages to find out what scientists know about the biggest thing there is!
Star Background copyright 1994, 1995, 1996 Loch Ness Productions. Created by Tim W. Kuzniar.
COBE background radiation image courtesy of the National Academy Press, Washington, D.C.