Space Place in a Snap: Quick and fun answers to big science questions brought to you by NASA's Space Place! In this episode, find out how GPS works and how it can help you satisfy a late night pizza craving! For a transcript of this video and a fun downloadable poster, visit http://spaceplace.nasa.gov/gps-pizza/ Be sure to check out NASA's Space Place for a ton of exciting activities, interesting articles, and cool games at http://spaceplace.nasa.gov.