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How Do Astronomers Measure Space?
A SciShow Kids lesson answering kids' space questions — including how astronomers use math to figure out how far away the stars are, with a fun pencil trick you can try at home.
How it works
- Press play to start the video.
- Videos 5 minutes or longer pause once or twice for a quick check. Get it right and you're on your way. If not, you'll see a friendly explanation and the video simply keeps going. Short videos skip the checks.
- At the end there's a 3-question test. Score 60% or more to complete the lesson, and 80% or more to master it. You can always watch again and try for a higher score.