10-Minute Astronomy!  Episode 30 - Chapter 19:  Cosmic Distances, Cosmic dust, rays.
Channel: The Astronomers
Date: 2021-04-09

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

Chapter 19 Celestial Distances
19.1 Fundamental Units of Distance
19.2 Surveying the Stars
19.3 Variable Stars: One Key to Cosmic Distances
19.4 The H–R Diagram and Cosmic Distances

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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