Every Fri.–Sun. Three different audiovisual planetarium shows suitable for all ages. Sea Monsters (noon) follows a curious dolichorhynchops (an extinct species of marine reptile) as she travels through the most dangerous oceans in history. The Sky Tonight (1 & 3 p.m.) is an exploration of the current night sky, with tips on how to find the cardinal directions, constellations, and planets on your own. Black Holes (2 p.m.) features high-resolution visualizations to bring the current science of black holes and other cosmic phenomena to the screen. Noon, 1, 2, & 3 p.m., U-M MNH, 1105 North University. $8 in the gift shop. Limited capacity. lsa.umich.edu/ummnh, (734) 764–0478.