About this video
This video explains how GPS works and how scientists use it to find out information about satellites. A scientist named Steven Murdoch found some secret messages hidden in the GPS signals! He used math and computers to figure out what they meant.
🧠 Quiz & Trivia
Test your knowledge after watching!
Q1 What does GPS stand for?
Answer: Global Positioning System
Q2 How fast do GPS satellites send data?
Answer: About a thousand times slower than old modems
Q3 What kind of messages did Steven Murdoch find in the GPS signals?
Answer: Secret messages that he had to decode
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