Adler Planetarium After Dark. When: Third Thursday of select months February 20, April 16, June 18, August 20, October 15, 2020. February, April, and October: 6:00 – 10:00 pm; June & August (Summer Hours): 6:30 – 10:30 pm. Where: Adler Planetarium, 1300 S Lake Shore Dr., … [Read more...] about Adler Planetarium After Dark