As a pretty major Star Wars fan, this article had me at hello.  But as a novice space follower whose real and only education about it are based in sci-fi, I was a little hesitant to dive into the article.  But am I so happy I did. Dennis Overbye’s article is accessible and inclusive. His science writing is clear and easy to follow. I especially loved his comparison of universal expansion to baking with raisins.  Def worth a read. And the comments are not to be missed.