GK
SOLAR SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It does not have enough gravity to be spherical
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It does not orbit the sun
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It has other objects in its area of orbit
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It is smaller than Eris
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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: -Many Kuiper Belt objects have moons, and Pluto has five of its own-Charon, Styx, Nix, Kerberos, and Hydra. Pluto is tidally locked with its largest moon, Charon, which is about half the dwarf planet’s diameter. The two worlds are cosmic tango partners, always showing the same face to one another.
Detailed explanation-3: -Go back to 1801 and Ceres-the largest object in the asteroid belt-was discovered and described as the “missing planet” between Mars and Jupiter. Demoted shortly after to being a mere asteroid, the same IAU meeting in 2006 that demoted Pluto upgraded Ceres to dwarf planet status.