Think you know a lot about the universe? You may, or may not, be right! Aspiring astrologists examine our ever-expanding universe with a video from the Veritasium playlist. The narrator discusses the observable universe, the time it takes for light from beyond the Hubble Sphere to reach Earth, and how we can observe stars traveling faster than the speed of light.

Concepts

the universe, light, photons, the speed of light, expansion, the hubble telescope, time, light years, hubble sphere

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Additional Tags

science

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Instructional Ideas

• Have students write down why they think we're able to see light from very distant galaxies before watching the video
• Dig deeper into the Hubble Sphere by assigning some insightful problems and questions
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Classroom Considerations

• The video requires extensive knowledge of the behavior of the universe

• This video is hosted on YouTube

Pros

• Illustrations help viewers grasp significant points
• The narrator poses many thoughtful questions throughout the video, a great help for post-video discussions

Cons

• None

Common Core

SL.9-10.2