How many major planets are in our solar system?

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Study for the Ohio 5th Grade Science OST Test. Prepare with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

How many major planets are in our solar system?

Explanation:
Major planets are the big, round objects that orbit the Sun and have cleared their neighborhood of other debris. Right now there are eight of them: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Pluto used to be counted as a ninth planet, but in 2006 it was reclassified as a dwarf planet because it hasn’t cleared its orbit of other objects. That’s why the number of major planets is eight today.

Major planets are the big, round objects that orbit the Sun and have cleared their neighborhood of other debris. Right now there are eight of them: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Pluto used to be counted as a ninth planet, but in 2006 it was reclassified as a dwarf planet because it hasn’t cleared its orbit of other objects. That’s why the number of major planets is eight today.

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