The James S. McDonnell Planetarium at the Saint Louis Science Center will welcome back visitors on July 18. After several months of renovations, this major upgrade promises a state-of-the-art experience for St. Louis’s astronomy enthusiasts.

A $14.6 million transformation awaits the Fleet Science Center in Balboa Park, set to break ground in September and finish by spring 2026. Leaders hope the project will breathe new life into the historic building and enhance the experience for visitors of all ages.