Scientists Propose Redefining Planets To Include Pluto And Over 100 Celestial Bodies

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Solar System with eight planets and one dwarf planet (Photo Credit: Theplanets.org)

In 2006, the International Astronomical Union (IAU), which promotes and safeguards the science of astronomy, passed a resolution that classified all bodies (except satellites) in our solar system into three distinct categories – planets, dwarf planets, and Small Solar System Bodies. To qualify as a planet, the body had to orbit around the sun, have sufficient mass for its self-gravity to pull it into a round shape, and have cleared the neighborhood around its orbit. Since Pluto did not meet the third criterion, it was downgraded to a dwarf planet.

댓글 263개
  • Death star7년 이상
    cool
    • Death star7년 이상
      this is cool
      • 58907년 이상
        awesome
        • bob7년 이상
          i think we should classify pluto as a planet but not the moon. planets cant orbit other planets.
          • kaga
            kaga7년 이상
            i agree but i think we should leave out the moon and other lunar objects. however, it is possible for a planet to orbit a planet. reply if you agree, disagree, or have any ideas! Feel free to express your opinion!
            • cosmologist377
              cosmologist3777년 이상
              This is getting curious, But I think Pluto should remain as a dwarf planet with the other 4 dwarf planets ->( Eris, Ceres, Makemake and Haumea). Pluto does not have a stable orbit so do the other dwarf planets and this is a characteristic feature. And do you know that Eris is the largest asteroid in the solar system! ==> Like if you agree! :-)
              • AT7년 이상
                So that is what I think
                • AT7년 이상
                  I think the pink planet and Pluto are kinda the same except Pluto is not a planet ☹️
                  • S8년 이하
                    Well they do need to be treated equally so only dwarfs should be planets too many asteroids in one place and a planet does not orbit another planet so asteroids, comets, and moons should not be a planet besides that dwarf planets should be a planet.
                    • S8년 이하
                      There would be way too many planets

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