Planet X

基本解釋

Will Planet X or Eris approach the Earth and threaten our planet with destruction?
行星X或矮行星厄里斯（Eris）行將接近地球，威脅并要?dú)缥覀兊牡厍騿幔?/li>
So while the latest version of Planet X could certainly exist in theory, it's way too early to start rewriting the textbooks.
因此，最近未知新星體的發(fā)現(xiàn)也許從理論上來說確實(shí)存在，但是要想改寫進(jìn)教科書，還是太早了。
Several astronomers have said that there's no evidence for the Planet X theory, and that if the planet did exist, humans would be able to see it even without a telescope.
幾個(gè)宇航員已經(jīng)說過，沒有證據(jù)支持 X 行星理論，而且如果真的存在這樣一顆行星的話，那么人們即使不用望遠(yuǎn)鏡也能看到它。

He died long before the search for Planet X resulted in the discovery of Pluto.
Mister Lowell himself searched for Planet X for two years starting in nineteen-oh-five.
In fact, he failed to recognize Planet X in a few photographs.

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