光年
例句
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The distance can be expressed in light-years.
距离可以用光年表示。
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Light-year is an astronomical unit.
光年是一个天文单位。
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Observers have recently found in the Universe giant voids about 500,000,000 light-years across.
观察员最近在宇宙中发现了直径约5亿光年的巨型空洞。
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In the year 296,036 , Voyager 2 will pass within 4.3 lightyears of Sirius.
在296036年, “旅行者2号”将在4.3光年的距离范围内通过天狼星.
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The planet, dubbed HAT - P - 1, is located some 450 light - years from Earth in the constellation Lacerta.
这个行星, 编号为 HAT -P-1, 位于离地球450 光年 的蝎虎星座内.
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Pleiades are approximately 440 light - years away and the Hyades are about one - third that distance: 150 light - years .
昴星团(离地球)大约有440 光年 远,而毕星团则大约是此距离的 三分之一: 150 光年.
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Light takes about 1500 years to reach us from Horsehead Nebula.
从马头星云发出的光需要经过1500光年才能到达我们这里.
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This law is known to hold true for galaxies at a distance of at least several billion light years.
据知，这条定律同样适用于距离至少几十亿光年之远的星系。