In honor of Martin Luther King Jr. Day, visitors will enjoy free general museum admission at Cranbrook Institute of Science on Monday, Jan. 15! Visitors can explore the Institute’s astronomy, anthropology, mineral, and motion galleries, and much more. Planetarium shows will also be available for an additional fee, including One World, One Sky: Big Bird’s Adventure, From Dream to Discovery: Inside NASA, Michigan Sky Tonight, and Young Stargazers Sky Journey.