the museum of science (mos) is a science museum and indoor zoo in boston, massachusetts, located in science park, a plot of land spanning the charles river. along with over 700 interactive exhibits, the museum features a number of live presentations throughout the building every day, along with shows at the charles hayden planetarium and the mugar omni theater, the only domed imax screen in new england. the museum is also an accredited member of the association of zoos and aquariums (aza) and is home to over 100 animals, many of which have been rescued and rehabilitated.