Where “Whoa” happens daily. Open Thurs-Mon. Entry is FREE! #stlsciencecenter Where “Whoa” happens daily. Open Thurs-Mon. Entry is FREE! Learn more at slsc.org. #stlsciencecenter As one of a few free nonprofit science museums in the country, the Saint Louis Science Center’s mission is to inspire everyone to be curious and engaged in science. By creating a place where everyone can discover together, the Science Center is forging the future of the region and envisioning an equitable and inclusive society where people are passionate about science and use it to improve lives, transform communities, and empower future generations.