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The Birth of the Galaxy in 60 Seconds
A TED-Ed lesson by Scott Hershberger on how our Milky Way galaxy formed and why it has its shape. Learn how spinning motion made the galaxy flat and what its spiral arms really are.
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.