Fascinating Facts About the Universe

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Questions and Answers

How does the size of Jupiter's great red spot compare to Earth?

  • Same size
  • Twice as big (correct)
  • Nine times bigger
  • Half the size

Compared to the Earth, how many times wider is Saturn?

  • Nine times (correct)
  • Five times
  • Three times
  • Twice

How does the diameter of VY Canis Majoris compare to the Sun?

  • 100 times larger
  • Equal in size
  • Half the size
  • 2,000 times larger (correct)

Which galaxy is mentioned to be twice as wide as the Milky Way?

<p>NGC 6744 (B)</p> Signup and view all the answers

How many galaxies are estimated to exist in the universe according to the text?

<p>Thousands (C)</p> Signup and view all the answers

Which celestial body mentioned is NOT larger in diameter than Earth?

<p>Jupiter (D)</p> Signup and view all the answers

What is the approximate diameter of the galaxy NGC 6744 in miles?

<p>1.242 quadrillion miles (D)</p> Signup and view all the answers

Compared to our Solar System, how large is the biggest known star, VY Canis Majoris?

<p>It is 2,000 times larger than the Sun (C)</p> Signup and view all the answers

Which statement about the size of celestial bodies in the text is TRUE?

<p>The Milky Way galaxy is half the size of NGC 6744 (A)</p> Signup and view all the answers

Approximately how many stars are there in a galaxy mentioned in the text?

<p>Billions (C)</p> Signup and view all the answers

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Study Notes

  • The distance between Earth and the moon can fit every planet in our Solar System.
  • Jupiter's great red spot is twice as big as Earth, Saturn is nine times wider than Earth, and Saturn's rings contain mountain-sized fragments.
  • The Sun is significantly larger than Earth, and the biggest known star, VY Canis Majoris, is 2,000 times the diameter of our Sun.
  • The Milky Way galaxy's diameter is about 621 quadrillion miles, and the galaxy NGC 6744 is twice as wide as the Milky Way.
  • The universe contains thousands of galaxies, each with millions or billions of stars and planets, some of which may have formed just three billion years after the Big Bang.

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