Pluto has a diameter of just 1,438 miles. It is made mostly of ice and frozen rock. It is very small and has an irregular orbit. It was originally classified as the ninth planet from the Sun, but it has been recategorized as a dwarf planet within the Kuiper belt. Which of the following is not a factual detail about Pluto?
Correct answer: D. Pluto should be classified as a dwarf planet.
- A. Pluto has a diameter of 1,438 miles.
- B. Pluto is made mostly of ice and frozen rock.
- C. Pluto has an irregular orbit.
- D. Pluto should be classified as a dwarf planet.
Explanation
D is the correct answer because it is not a factual detail about Pluto. It is a classification of Pluto that has been assigned by the International Astronomical Union based on a set of criteria that define what a planet is. Some scientists and members of the public may still consider Pluto to be a planet, but the current scientific consensus is that it should be classified as a dwarf planet within the Kuiper belt. Therefore, option D is not a factual detail about Pluto, but rather a categorization assigned to it.
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