NASA's Jet Propulsion Laboratory in Pasadena, California opened their doors to the public on May 20-21, 2017. "A Ticket to Explore JPL" was a smashing success with approximately 22,000 visitors.

NASA's Jet Propulsion Laboratory in Pasadena, California opened their doors to the public on May 20-21, 2017. "A Ticket to Explore JPL" was a smashing success with approximately 22,000 visitors.