Come to the Planetarium Programs in Waukesha this spring 2019! The Horwitz DeRemer Planetarium is located at the Retzer Nature Center in Waukesha. The programs are on March 30, April 6, 13, and 20, 2019. All children's programs are at 11:00 am and have a $5 admission.  In March see Two Small Pieces of Glass. This program celebrates 400 years since Galileo first pointed his telescope at the sky.  Don’t miss this fascinating look at the incredible contributions to astronomy…