The Astronomy Center has provided educational resources to introductory astronomy educators since 2003. Over the past 20 years, the rapid pace of discovery has rendered some of our linked resources obsolete. Thus, the Astronomy Center will be decommissioned on March 1, 2022. Our highest quality resources will be retained on ComPADRE.org.
%0 Electronic Source %A Richmond, Michael %D February 20, 2001 %T Extragalactic Astronomy and Cosmology %V 2022 %N 7 December 2022 %8 February 20, 2001 %9 text/html %U http://spiff.rit.edu/classes/phys240/phys240.html
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