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	Lesson 1 - Lecture 1 - Science and Astronomy - 2020 - OpenStax (Introduction to Astronomy - Wagner) View
	Lesson 1 - Lecture 1 - Astronomy and Science - OpenStax (Introduction to Astronomy) View
	Openstax Astronomy Chapter 1 (Dave Compton (OC Astronomy)) View
	Lesson 1 - Lecture 4 - A Century of Astronomy - Enrichment - OpenStax Astronomy 2e (Introduction to Astronomy) View
	GRCC Astronomy - M1: Chapter 1 (Lauren Woolsey) View
	Lesson 1 - Lecture 3 - Scales of the Universe - 2020 - OpenStax (Introduction to Astronomy - Wagner) View
	OpenStax Astronomy - Chapter 11 - Dr. James Wetzel (drjameswetzel) View
	Lesson 7 - Lecture 1 - Overview of the Solar System - 2020 - OpenStax (Introduction to Astronomy - Wagner) View
	Lesson 26 - Lecture 1 - Galaxy Types - 2020 - OpenStax (Introduction to Astronomy - Wagner) View
	Lesson 20 - Lecture 1 - The Interstellar Medium - 2020 - OpenStax (Introduction to Astronomy - Wagner) View