Astronomy and Astrophysics Quiz

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Questions and Answers

What is the primary mechanism by which the Sun generates its energy?

  • Helium flash
  • Triple-alpha process
  • CNO cycle
  • Proton-proton chain reaction (correct)

Which of the following types of celestial objects is thought to be responsible for the reionization of the universe?

  • Active galactic nuclei
  • Quasars
  • Blazars
  • First-generation stars (correct)

What is the approximate ratio of the mass of the Milky Way's central black hole to the mass of the Sun?

  • 1:100
  • 4:1
  • 1:4 (correct)
  • 1:1000

What is the name of the process by which the solar wind interacts with the interstellar medium?

<p>Heliosheath formation (A)</p> Signup and view all the answers

What is the term for the hypothetical form of matter thought to make up approximately 27% of the universe's total mass-energy density?

<p>Cold dark matter (B)</p> Signup and view all the answers

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Study Notes

Energy Generation in the Sun

  • The Sun generates its energy primarily through a mechanism involving nuclear reactions in its core.

Reionization of the Universe

  • Celestial objects thought to be responsible for the reionization of the universe are quasars.

Milky Way's Central Black Hole

  • The mass of the Milky Way's central black hole is approximately 4 million times the mass of the Sun.

Solar Wind Interaction

  • The process by which the solar wind interacts with the interstellar medium is called bow shock.

Dark Matter

  • Dark matter is the hypothetical form of matter thought to make up approximately 27% of the universe's total mass-energy density.

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