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Our Place in Our Galaxy

Learn about the size and dimensions of the Milky Way Galaxy, including the distance of 100,000 light years and its thickness of approximately 1,000 light years. Discover the vastness of space with 200 billion stars represented as bird seeds on a football field. Visualize the scale by spreading them across a continent. Image credits: NASA, STScI, and COsmic Background Explorer (COBE) Project.

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Our Place in Our Galaxy

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  1. Our Place in Our Galaxy

  2. Solar System Universe Galaxy What’s the Difference? Image credits: NASA, STScI

  3. Solar System Universe Galaxy What’s the Difference?

  4. Where is our Solar System? Solar System here Visible stars, gas, dust in the Milky Way Galaxy Image credits: NASA, STScI

  5. Solar System

  6. How big is the Milky Way Galaxy? 100,000 light years Image credits: NASA, STScI

  7. How far is 100,000 light years? 1 inch represents 5.5 light hours (Sun to Pluto) 1 mile represents 40 light years 2,500 miles represents 100,000 light years

  8. 2,500 miles Continent of North America!

  9. And how thick is our Galaxy? ~1000 light years Credit: NASA, COsmic Background Explorer (COBE) Project

  10. How thick is 1,000 light years? If 2,500 miles represents100,000 light years 25 miles represents 1,000 light years

  11. 200 BILLION Stars!!!

  12. Fill with bird seed4 feet deep on a football field 200 BILLION Stars!!!

  13. 2,500 miles Spread them over the continent 25 miles deep!

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