Thursday is the 50th anniversary of the launch of the first space satellite. Sputnik blasted off from the Soviet Union on October 4th, 1957. The Calusa Nature Center and Planetarium in Fort Myers is marking the date with speakers and activities…and if the weather’s right a little satellite gazing. Executive Director Sanders Lewallen told WGCU’s Valerie Alker that it’s an anniversary well-worth remembering.