Science buffs of all ages – even "advanced" – can enjoy the "hands-on exhibits" at this "excellent" Heritage Square museum that's considered "one of the best around"; other lures include "mini-lectures" and presentations on "interesting subjects" (cow eyeball dissection, anyone?) plus a five-story IMAX movie screen that wows 'em with cinematic "educational messages"; N.B. the Dorrance Planetarium is closed for renovations until April 2008.