If you haven’t read Dr. Neil deGrasse Tyson’s newest book, “The Pluto Files: The Rise and Fall of America’s Favorite Planet,” you owe yourself the treat. Not only is it vintage Tyson at his entertaining best, but “Pluto Files” also sheds light on the ever-changing level of knowledge that we have about our place in the universe, and how space exploration, whether through astronomy or other means, continuously changes and informs our understanding of our place in the cosmos. ...