Supervolcanoes are the largest volcanic eruptions Earth can produce. Learn about them at the "Supervolcanoes" show at the William M Thomas Planetarium on February 22. Tickets are avialable online via Vallitix at $10 for adults and $8 for seniors and children. Doors open at 7:00 PM and are locked at 7:30 PM (no late admissions). See the Supervolcanoes page for details and a map to the Planetarium and Ticket Office.