The Discovery Museum & Space Center reopens Saturday with the return of the popular “Space Quest” exhibit, which allows visitors to explore our solar system’s planets and beyond through interactive stations. Also on display will be detailed model of the robot Mars Rover Opportunity. That’s more than 40 times longer than its designed lifespan. Among Opportunity’s finds: a basketball-sized meteorite nicknamed “the Heat Shield Rock” because of its location near the rover’s discarded heat shield. The Discovery Museum winter hours are 10 a.m.-4:30 p.m. Saturday-Sunday and noon-4:30 p.m. Tuesday-Friday. Weekend admission also includes a planetarium show and other family activities. $6-$8, free for children 3 and younger. Information: www.thediscovery.org, (916) 808-3942.