Unit 3: Lesson 8 9 Slides

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There is a pattern appearing in the sky at night. This photo is a long exposure photo, capturing the night sky over several hours. What star is at the center if this phenomenon? Why do you think we see this pattern?

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What is an example of a celestial object? What is an example of an object humans have placed in space?

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What is the reference frame for the Moon as it goes through its orbit? What is the reference frame for the Earth as it goes through its orbit?

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Remember: We see the constellations that are "behind" the Earth. What constellations will we see during October 21st? What about January 21st and February 21st?

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Why do the Northern and Southern Hemispheres experience different seasons throughout the year?