Which is the eighth and furthest-known planet from the sun in the solar system?
- Konuyu başlatan AngeloN
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Onaylı Üye
what do you think, why Pluto was excluded from the list of planets in the solar system?
Uzman Üye
is Neptune a planet? I Heard it isn't.
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Süper Üye
Because it didn't meet the three criteria the IAU uses to define a full-sized planet.
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Neptune is the eighth and farthest-known Solar planet from the Sun.
Uzman Üye
isn't there used to be 9 planet and the last planet pluto does get excluded just because of some requirements that pluto doesn't meet? well i learned this in science class when i was in college. I don't know the exact reason why it got excluded.
Onaylı Üye
Pluto was excluded from the list of planets, simply because it does not fit the formal definition of a planet. A planet of the Solar System is a celestial body that meets all of the following conditions:
1. orbiting the Sun ( not a satellite of another body);
2. having enough gravity to have a shape close to a ball;
3. near the orbit of which there is "space free from other bodies".
Pluto does not satisfy the 3rd condition.
1. orbiting the Sun ( not a satellite of another body);
2. having enough gravity to have a shape close to a ball;
3. near the orbit of which there is "space free from other bodies".
Pluto does not satisfy the 3rd condition.
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Seçkin Üye
I think Neptune is not a planet
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