An Ancient Universe
 

An Ancient Universe: How Astronomers Know The Vast Sale of Cosmic Time

by Andrew Fraknoi (Foothill College), George Greenstein (Amherst College), Bruce Partridge (Haverford College) and John Percy (University of Toronto)
[December 28, 2001]

A Special Edition of
"The Universe in the Classroom"
A Newsletter on Teaching Astronomy in Grades 3-12

Published by the
American Astronomical Society
and the
Astronomical Society of the Pacific

© Copyright 2001, American Astronomical Society. Permission to reproduce in its entirety for any non-profit, educational purpose is hereby granted. For all other uses contact the publisher: Astronomical Society of the Pacific, 390 Ashton Ave., San Francisco, CA 94112.

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