Solar System and Planets

1. Who proposed the Heliocentric model of the solar system?

  1. Johannes Kepler
  2. Nicolaus Copernicus
  3. Galileo Galilei
  4. Isaac Newton
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Answer: Option B. Nicolaus Copernicus

2. Who discovered the laws of planetary motion?

  1. Claudius Ptolemy
  2. Nicolaus Copernicus
  3. Galileo Galilei
  4. Johannes Kepler
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Answer: Option D. Johannes Kepler

3. Can you identify the inaccurate statement from the options below about the planet Mars?

  1. Mars is known as the Red Planet
  2. Mars has no moons
  3. It takes Mars about two Earth years to orbit the Sun
  4. Mars has the tallest volcano in the solar system
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Answer: Option B. Mars has no moons

4. Out of the options below, which planet was the first to have its movement plotted across the sky in the 2nd millennium BC?

  1. Mars
  2. Mercury
  3. Venus
  4. Jupiter
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Answer: Option C. Venus

5. Who proposed the Geocentric model of the solar system?

  1. Claudius Ptolemy
  2. Nicolaus Copernicus
  3. Johannes Kepler
  4. Galileo Galilei
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Answer: Option A. Claudius Ptolemy