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...
BBC地平线：拜拜冥王星 Bye Bye Planet Pluto
演员： 伊安·霍姆
导演：Nicola Cook
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类型：纪录片
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状态：更新至第1集
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更新时间：2026-07-31
剧情：《BBC地平线：拜拜冥王星 Bye Bye Planet Pluto》剧情介绍：At its conference this August, the International Astronomical Union (IAU) will make a decision that could see Pluto lose更多