The author discusses the International Astronomical Union's (IAU) categorization system for planets, arguing against its consideration of location and for the reinstatement of Pluto as a planet.EicherDavidJ.Astronomy
数十年来，科学家普遍认为太阳系有九大行星，但随着一颗比冥王星更大、更远的天体的发现，使得冥王星大行星地位的争论愈演愈烈。一是由于其发现的过程是基于一个错误的理论；二是由于当初将其质量估算错了，误将其纳入到了大行星的行列。因此在国际天文学联合会大会上，是否要给冥王星“正名”成为了大...
Advertisement - Continue Reading Below New Horizons: The Journey to Pluto NASA Wants You To Name a Kuiper Belt Object New Horizons Just Woke Up Let's Go Skating on This Frozen Pluto Lake Pluto's Largest Moon Tried to Rip Itself Apart
Why isn’t Pluto a planet anymore? And what is a planet anyway? Astrophysicist Jackie Faherty explains! If you’re more of a dinosaur person, check... 其它视频 9:58 How We Could Build a Moon Base TODAY – Space Colonization 1 33 人观看 16:54 How the C-Section Became America’...
Leonard David
Free Essay: Pluto is a planet because it meets the expectations of being one. According to Discovery education that in order to be a planet it has to orbit...
Trivia Why Is Pluto Not a Planet? SciShow Space Edit It looks like we don't have any trivia for this title yet. Be the first to contribute.Learn more Contribute to this page Suggest an edit or add missing content IMDb Answers: Help fill gaps in our data Learn more about contributing ...
For a long time, Pluto was considered to be the 9th and tiniest planet in our solar system. However, after scientists made some new discoveries, they decided it really wasn't a planet after all. Come learn about Pluto and why it is no longer called a planet. ...
When Pluto was "demoted" from a planet to a dwarf planet back in 2006, it was a sore subject for many. Then, in 2015, a spaceship gave us our first-ever close-up of Pluto. Read why Pluto is no longer a planet, how it got its name and more cool facts.
battered craters and signs of liquid flowing upon its surface all point to a world that underwent massive geological change since its formation. On this basis alone, people like Stern have said, Pluto should be considered a planet since it is a dynamic place, a place that is not so static...