The resources presented here include material covered in this lesson, but also material that will be covered in the next few lessons:
Links[1] http://imgsrc.hubblesite.org/hu/gallery/db/video/starslife/formats/starslife_640x480.mov [2] https://www.nasa.gov/content/hubble-traveling-exhibit-stars [3] http://chandra.harvard.edu/edu/formal/stellar_ev/