“The nitrogen in our DNA, the calcium in our teeth, the iron in our blood, the carbon in our apple pies were made in the interiors of collapsing stars. We are made of star stuff".  Carl Sagan
Copyright © 2023 by Dennis Roscoe, Ph.D.         Last Update was September 20, 2023                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
I will be at the Waukesha Public Library (321 Wisconsin Ave., Waukesha, WI 53186) on Thursday, September 28th at 6:30pm.  My topic will be on the upcoming Annular Solar Eclipse.  This is a free event.