Take sleeping under the stars to a whole new level by exploring the stars while you sleep. It's not quite Night at the Museum, but tonight's Space Sleepover at the Great Lakes Science Center offers a chance to learn about the stars and planets while spending the night within the Science Center's walls. From 7 p.m. tonight to 9 a.m. tomorrow, you and the kids can get your fill of every space favorite: from stomp rockets and homemade Mars gliders to the Omnimax movie Destiny in Space. After enjoying all the after-hours activities, a special breakfast will be served on Saturday morning; Saturday admission to the museum is free for participants. Space Sleepover is recommended for school-aged kids, and Mom and/or Dad must accompany them. Cost is $39, and less for members. Discover more information at glsc.org/spacesleepover.php; make reservations by calling 216-621-2400. The Great Lakes Science Center is at 601 Erieside Ave. — Max Hayden