►This site was originally created for my kids and their cousins, because we did science together. We eventually added more friends and I ended up having science classes for five years. I am no longer adding to the site (since 2014), but will leave it up for others' use. I do post to facebook occasionally if I come across something to share. =)

►Please accept my apology for any broken links or videos that do not work. I am always disappointed when people take down their videos from YouTube. It makes it hard to find just the right replacement. And because the videos were posted years ago, I usually have no recollection of what the video was about.
I kept thinking I would have time after my kids graduated, but life has filled up my free time with new responsibilities. =)

►Please do not email, asking me to post your website link, or to review something to put on my site. Any resources posted on this site are things I had found on my own during my regular searching for material I needed at the time, and liked it well enough to post here. There have never been any affiliates on my site, and as it is no longer active, would not be worthwhile at this point. ;)
Thank you!

Apologia Physical Science, Module 16, An Introduction to Astrophysics

Interactive Study Links
• Create an account and make your own flashcards at Quizlet.com!

Other Study Links
• Several links to various worksheets at Debbie's Educator's Resources.  (Thanks, Debbie!)




(1) p. 405, Exploring the Sun
Two more layers are named than what we learned, so don't let that throw ya!  =)


The sizes of stars


(2) p. 407, Nuclear Fusion Animation


(3) p. 407, Nuclear Fusion


(4) p. 409, Nuclear Fission
Part 1


Part 2



(5) p. 411, April, 1986, Chernobyl (Chir-NO-ble)


(6) p. 415, The Hetrzsprung-Russel Diagram


(7) p. 419, Cepheid Variables


(8) p. 420, Measuring Distance by Triangulation and Parallex





(9) p. 421, How Far is a Light Year?


(10) p. 424, What is a Redshift?
He says the universe is expanding. Dr. Wile says it could be or could not be.


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