GK
SOLAR SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Scientists discovered it did not orbit the Sun.
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Scientists found that Pluto did not have any gravity.
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Scientists changed the definition of a planet based on new information.
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Scientists decided that there should only be eight planets in the solar system.
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Detailed explanation-1: -Answer. The International Astronomical Union (IAU ) downgraded the status of Pluto to that of a dwarf planet because it did not meet the three criteria the IAU uses to define a full-sized planet. Essentially Pluto meets all the criteria except one-it “has not cleared its neighboring region of other objects.”
Detailed explanation-2: -No-Pluto is technically a dwarf planet and is classified differently than the major planets, which include Jupiter, Saturn, Uranus, Neptune, Earth, Venus, Mars and Mercury. Pluto was included in the list until the International Astronomical Union determined it did not meet qualifications in 2006.
Detailed explanation-3: -Pluto was recently demoted from planethood because of the discovery of the Kuiper belt, a sort of second asteroid belt beyond Neptune’s orbit. It needs to be in orbit around the Sun – Yes, so maybe Pluto is a planet. Pluto has not cleared away the Kuiper Belt, so it has been demoted from planethood.