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.
Astronomy notes is an educational resource for introductory astronomy classes for undergraduates. This section discusses the properties of stars, such as apparent magnitude, absolute magnitude, luminosity, color, temperature, stellar velocities, compositions, and sizes. Other topics included are descriptions of parallax, redshift, blueshift, center of mass, and the HR diagram.
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