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oort cloud

奥尔特云

奥尔特云（Oort cloud）是太阳系边缘地区一个接近球型的地带，从这里返回的彗星的归宿是一个存在已久的问题，因为这里穿过太阳系并返回的彗星的实际数目...

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欧特云

欧特云（Oort cloud）是一个假设包围着太阳系的球体云团，布满着不少不活跃的彗星，距离太阳约50,000至100,000个天文单位，差不多等于一光年，即太阳与...

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奥尔特星云

奥尔特星云（Oort cloud）位于太阳系边缘，布满许多残余物质。如果有恒星掠过奥尔特星云，就会驱使彗星飞向地球。

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奥特云

天文学家认为这颗彗星可能是第一次脱离彗星的故乡—奥特云（Oort Cloud），踏上它的内太阳系之旅，因此彗星表面还含有大量的挥发物质。当它愈来愈接近太阳的时候，亮度就会增加得很快。

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短语

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n. (astronomy) a hypothetical huge collection of comets orbiting the sun far beyond the orbit of Pluto; perturbations (as by other stars) can upset a comet's orbit and may send it tumbling toward the sun

以上来源于: WordNet

The Oort Cloud is thought to extend about 1 light year from the Sun.

欧特云团距太阳1光年距离。

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The other six hail from the Oort Cloud more than 5, 000 times farther out.

其他六个产生于又远出5000多倍的奥尔特星云。

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A Nasa graphic which illustrates how the Oort Cloud surrounds our solar system.

这幅美国宇航局的图示说明了奥特云如何包围着我们的太阳系。

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更多双语例句

The galaxy's tidal wobble is, they think, being modulated by the gravity of something big within the Oort cloud itself.

ECONOMIST: X marks the spot
Only when a comet arriving from the Oort cloud has its orbit tweaked by a close encounter with a planet does it settle into a more regular existence.

ECONOMIST: Comet Ikeya-Zhang is enlivening the skies
Whitmire notes that Sedna, thought by some to be an inner Oort Cloud object, may have also been perturbed by Tyche, since Sedna has an orbit well beyond that of Neptune.

FORBES: Sun May Still Have Low-Mass Solar Companion, Say Astrophysicists Searching NASA WISE Mission Data

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