Lesson 27 - Lecture 1 - Active Galaxies and Quasars - OpenStax
Channel: Introduction to Astronomy
Date: 2019-02-13

In this lecture, we will discuss active galaxies and how they differ from ordinary galaxies. We will also look at quasars and how they can be used to study what the universe was like early in its history. These lecture videos are designed to complement the content in the OpenStax Astronomy textbook. The book can be downloaded free of charge at: https://openstax.org/details/books/astronomy/