Tour NASA JPL A Ticket to Explore JPLA�is an annual event where NASAa��sA�Jet Propulsion LaboratoryA�in Pasadena, California, opens its doors to the public once a year. Visitors are offered aA�behind-the-scenes look and interactive demonstrations. You must reserve tickets for JPLa��s Open House in advance. Other opportunities to experience JPL include their monthlyA�von Karman Lecture...
