Join us at Yerkes Observatory for an Open House! Each event has a unique theme and activities, making it an exciting, exploratory experience for you and your family. See below for the themes for the 2026 Open House season. Each event is 2-hour event will take place rain or shine, and details about the event will be posted on our website about one month prior to the event. Each event does not include the use of the telescopes in the building. Reservations are required.
- Friday, March 13, 2026, 8pm – 10pm: Messier Marathon with the Milwaukee Astronomical Society [SOLD OUT]
- Saturday, April 25, 2026, 5pm – 7pm: Celebrating Arbor and Earth Day [SOLD OUT]
- Thursday, May 21, 2026, 6pm – 8pm: Exploring Art @ Yerkes [SOLD OUT]
- Saturday, June 20, 2026, 7pm – 9pm: Summer Solstice Celebration [SOLD OUT]
- Friday, July 31, 2026, 6pm – 8pm: The Wonders of Physics [SOLD OUT]
- Tuesday, September 8, 2026, 6pm – 9pm: Deaf Night Out
- Saturday, October 17, 2026, 7pm – 9pm: Observe the Night Sky [SOLD OUT]