Explain how a cool, red star like Betelgeuse can have a much higher luminosity than a hotter star like the Sun.1. How is cosmological redshift | Cheap Nursing Papers

Explain how a cool, red star like Betelgeuse can have a much higher luminosity than a hotter star like the Sun.1. How is cosmological redshift

  1. Explain how a cool, red star like Betelgeuse can have a much higher luminosity than a hotter star like the Sun.1.
  2. How is cosmological redshift different from the Doppler shift?
  3. Explain the evidence that suggests other galaxies and galaxy cluster contain dark matter
  4. Briefly describe the four possible fates of the universe.

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