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2. Define: Galaxy

  • A galaxy is a collection of billions of stars. The Sun is one of many billions of stars which form the Milky Way galaxy.
  • Something in outer space.
  • A galaxy is a collection of billions of planets. The Earth is one of many billions of planets which form the Milky Way galaxy.

3. Do planets reflect sunlight?

  • Yes
  • No

4. Do all telescopes detect the same electromagnetic waves?

  • No
  • Yes

5. The spectra for galaxies further away appear more _____ than they should.

  • Red
  • Yellow
  • Purple
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