Astronomy Lecture With Speaker – Steve Gottlieb (Sky & Telescope mag.)

Please join Mt. Diablo Astronomical Society for the September 23rd general meeting.  Our monthly meetings begin with a short "What's Up" presented by one of our members (Mike Harms: "Recovery of the International Solar-Earth Explorer spacrecraft") followed by a speaker. This month's speaker is Steve Gottlieb, contributing editor for Sky & Telescope Magazine,on the discovery of the spiral structure in galaxies by Lord Rosse in 1845 - and what it means for us today.