How does GPS work?

In this episode, find out how GPS works and how it can help you satisfy a late night pizza craving!

Comprehension Questions:
1. What does GPS stand for?
2. Your phone can determine where you are by listening to signals from _________ in the sky.
3. True or False: Any device with GPS is programmed to know where all the GPS satellites are at any given time.
4. How does a phone compute its location?

Answer Key:
1. Global Positioning System
2. Satellites
3. True
4. Potential answer: By identifying how far the satellites are and figuring out the amount of time it took for the signal to reach the satellite.

For a transcript of this video and a fun downloadable poster, visit https://spaceplace.nasa.gov/gps-pizza...
Be sure to check out NASA Space Place for a ton of exciting activities, interesting articles, and cool games at https://spaceplace.nasa.gov/.