Join us this Thursday, July 21 at 7 p.m. at the Sandy Bay Yacht Club in Rockport for the second in the Thursday Talk series titled “Navigating the Cosmos” with William Waller, Ph.D. Bill will take us on a cosmic journey — from Rockport’s Front Beach into the Solar System, Milky Way and beyond. Along the way, he will show how astronomers reckon distances and sizes of myriad celestial wonders. It can take a lifetime to effectively navigate the currents, waves, winds, and shoals of Sandy Bay. It is another thing altogether to navigate our planet, galaxy, and universe. Bill is a former NASA astrophysicist and Tufts professor of astronomy. He currently teaches physical sciences at Rockport High School and writes general interest books on astronomy. Refreshments provided. All invited to attend!