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At its conference this August, the International Astronomical Union (IAU) will make a decision that could see Pluto lose its status as a planet. For the first time, the organisation will be officially defining the word "planet", and it is causing much debate in the world of astronomy. There is only one thing that everyone seems to agree on: there are no longer nine planets in t...
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新狂人 2017-10-07
冥王星虽然被移除了九大行星之列,但是她仍然是最为神秘的天体,新地平线号飞船已经探索了冥王星,发现了心形的大平原,神奇的五个卫星,还有大气层和季节的变化,也许在冰层下面的液体海洋还有生命【详见{了解宇宙如何运行}第5季第4集冥王星的秘密】,对冥王星,我们永远不会说Bye Bye。