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I assume you want to do a school presentation on some astronomy subject. Here are some things you may want to research about:

  • Stars - their sizes (which vary a lot!), their development
  • The origin of the Universe (the Big Bang)
  • Related to the above: the future of the Universe
  • Black holes
  • Comets
  • History of astronomy
  • The Zodiacal light
  • Planets in our Solar System
  • "Extrasolar" planets (planets outside our Solar System)
  • Nuclear fusion in stars (how do stars get their energy?)
  • Telescopes
  • Eclipses
  • Superstitions related to astronomy
  • The list could go on, and on...

I suggest you get a brief overview over some of these topics in the Wikipedia (read the introductory chapters in each case), especially if you don't know what it is about. Then choose a topic of your liking.

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14y ago

Heliocentric (Sun is center of solar system) vs. Geocentric model (Earth was center of Solar System)

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Q: What is a good science project on astronomy for grade 9?
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