10-Minute Astronomy! Episode 28: Chapter 18 Stars; A celestial Census. Stellar Masses, H-R Diagram

Prof. Jim Caffey Presents: "10-Minute Astronomy!" 2021 Edition

Chapter 18 The Stars: A Celestial Census
18.1 A Stellar Census
18.2 Measuring Stellar Masses
18.3 Diameters of Stars
18.4 The H–R Diagram

Award-Winning Online Astronomy Professor Jim Caffey, based in Springfield, Missouri, brings you "10-Minute Astronomy!" 2021 Edition, his new Lecture Video Series based on the FREE Text from OpenStax Astronomy.

30 lectures and 15 short introductions were added and updated for 2021 with accurate close captions for the deaf and hearing impaired by Hidy Hesham (Cairo University, Giza, Egypt). Professor Caffey was named one of the Leading Online Astronomy Professors using Virtual and Immersive Technologies in 2008 by his peers in Astronomy Education.

This lecture series is an OER - Open Educational Resource, meaning it can be shared and used freely, with credit given to Professor Jim Caffey. Designed for non-science majors, high school students, amateur and backyard astronomers, or the public.

Welcome to "10-Minute Astronomy!" 2021 Edition!

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