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日前，美國劍橋大學(xué)哈佛-史密森天體物理學(xué)中心科學(xué)家研究發(fā)現(xiàn)了8個適宜海洋或生命存在的行星。天文學(xué)家稱，在這8個行星中，有兩個是迄今已知所有外行星中最像地球的。

如果有一天，地球真的不再適合人類的生存（《星際穿越》中的末日變成現(xiàn)實？?。?，人類也不用擔(dān)心滅絕了——外國科學(xué)家已確認了超級地球的存在：比地球大3倍，距離22光年的超級星球，將成為首個適合移民的外星球

在英語學(xué)習(xí)中，英語詞匯學(xué)習(xí)是一門重要的必修課，免費在線學(xué)習(xí)行星的英文、行星用英語怎么說，最專業(yè)的詞匯學(xué)習(xí)資源助你輕松成為外語達人

浩瀚星空，繁星點點，前有古人夜觀天象，暢想嫦娥奔月；今有人造衛(wèi)星升空，探索無盡蒼穹，人類探索宇宙的步伐從未停止，于是便從地球，到月球，再到太陽系..小編為大家?guī)戆舜笮行堑慕榻B

聽寫填空,只寫填空內(nèi)容,不抄全文,5個左右的句子,不用寫標(biāo)號,注意標(biāo)點~ Hints: Kepler Cygnus Lyra Earth-like Alan Boss: I think we're on the verge of finding out just how many Earth-like planets...

450)this.width=450" 聽寫填空,只寫填空內(nèi)容,不抄全文,5個左右的句子,不用寫標(biāo)號,注意標(biāo)點~ Hints: Kepler Cygnus Lyra Earth-like Alan Boss: I think we're on the verge of finding out jus

If you’ve ever wondered where the Earth came from, the answer, it seems, is ___1___—the solar wind. Or so say scientists who, after examining solar wind samples collected by the Genesis spacecr...

It’s been nearly 20 years since astronomers first identified a planet outside our solar system. More than 500 exoplanets have been discovered since then, yet it’s not clear if even one of them ...

Imagine climbing diamond mountains, or hiking around the graphite shores of a lake of tar. Sound a little sci-fi? Well a new discovery suggests planets like that might be out there—planets with...

Astronomers have already discovered hundreds of exoplanets. But ____1____ the new kid. Which is orbiting a kind of star that models say it shouldn’t. Researchers found the exoplanet while lookin...