Family groups comprise a significant percentage of the museum visitor population, and many programs are created specifically for young learners (Borun, 2008). One such learning environment is that of planetaria, where both live and pre-recorded programs are presented to introduce concepts in Earth and Space Science to young children. Pacific Science Center’s Preschool Trip to the Moon live, interactive planetarium program was used as a context for exploring families’ motivations for attending a planetarium show, their reactions to the show, and in particular what children learned from the show