Universe Exploration
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Questions and Answers

According to the prevailing cosmological theory, when did space and time emerge together?

  • 13.787±0.020 billion years ago (correct)
  • 15 billion years ago
  • 10 billion years ago
  • 20 billion years ago

What is the approximate diameter of the observable universe at the present day?

  • 100 billion light-years
  • 80 billion light-years
  • 93 billion light-years (correct)
  • 120 billion light-years

What is the spatial size of the entire universe according to the text?

  • Infinite
  • 93 billion light-years
  • 100 billion light-years
  • Unknown (correct)

Who developed the heliocentric model of the universe?

<p>Nicolaus Copernicus (A)</p> Signup and view all the answers

What did some of the earliest cosmological models of the universe propose?

<p>Geocentric model with Earth at the center (D)</p> Signup and view all the answers

According to the prevailing cosmological theory, when did the universe emerge?

<p>13.787±0.020 billion years ago (C)</p> Signup and view all the answers

What does the universe comprise according to the text?

<p>All forms of energy and matter, and the structures they form (A)</p> Signup and view all the answers

Who developed the heliocentric model of the universe?

<p>Nicolaus Copernicus (B)</p> Signup and view all the answers

What is the approximate diameter of the observable universe at the present day?

<p>93 billion light-years (D)</p> Signup and view all the answers

What is the spatial size of the entire universe according to the text?

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

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