Join in on the celebration of Yuri Gagarin, the first man in space.
At the special events at the Saint Louis Science Center, there will be telescope viewing and special star shows, including Metal Moons at 6 p.m. and a human space flight program-themed Live Sky Tonight show at 7 p.m. The Liftoff Gallery will be open with educators on hand to answer questions.
5:30 to 9 p.m. at the Saint Louis Science Center.
More information: slsc.org
Explore the St. Louis Zoo after dark at Boo at the Zoo. Bring your little ghouls and goblins to this non-scary celebration designed just for kids. Though this is not a trick-or-treating experience, costumes are encouraged, and each child 12 and under will receive a treat bag when they leave.
Engage your young scientist in science-related learning at the Saint Louis Science Center's Preschool Science Series. Through interactive stories and hands-on exploration, children learn about science, as well as language, problem-solving and social skills.