How Many Stars Are There?

Are there more stars in the universe than grains of sand in the sea? This video looks at the way scientists attempt to answer this question by using data from NASA and focusing on observable space.

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Instructional Ideas

  • Research to update the numbers used in the video
  • Read about the new discoveries when trying to count the stars: https://www.spacetelescope.org/news/heic1620/
Classroom Considerations

  • Assumes prior knowledge of the difference between the universe and galaxies
Pros

  • Provides links to references used in the video that can be utilized to learn updated estimates
  • Attempts to make giant numbers more understandable by comparing them on a scale to things pupils might be able to conceptualize
Cons

  • None