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Astronauts will also test new safety procedures in the wake of the two thousand three Columbia Disaster.
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宇航员还将测试新的安全程序,继2003年哥伦比亚灾难之后。 |
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Astronomers are a resourceful lot, however, and not much given to brooding over what they might have observed if this troublesome interstellar substance did not get in the way.
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天文学家有很多的手段，但是仍然对如果没有挡在途中的讨厌的干扰会观察到什么念念不忘。 |
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Astronomers are considering changing what they call Pluto.
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天文学家正考虑更改冥王星的名字。 |
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Astronomers ascribed them to thermonuclear fusion of hydrogen or helium or to the sudden accretion of matter onto the star.
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天文学家因此可将其归因于氢或氦的热核融合反应，或是有物质突然被星体吸附而产生的。 |
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Astronomers assume that it interacts only by means of gravitation, the weakest of all the known forces of nature.
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天文学家假设，暗物质仅参与重力交互作用，重力是自然界中已知最弱的一种力。 |
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Astronomers bave been able to classify stars according to colour.
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天文学家能够按照颜色把星星分类。 |
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Astronomers believe the star's magnetic field caused the outburst, but do not understand how.
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天文学家认为，这种星球的磁场导致了爆炸的发生，但是，他们不明白是如何发生的。 |
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Astronomers call the area beyond Pluto the Kuiper Belt(3).
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天文学家把超出冥王星的区域称为柯伊伯带。 |
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Astronomers can deduce the recession velocity of a supernova by measuring the redshift of the light from the galaxy in which it lies.
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天文学家得知超新星与我们远离速率的方法，主要是透过其所属星系的红移来判定。 |
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Astronomers cannot see the planet through telescopes, but they can detect a wobble in the motion of Pegasus 51--caused by the gravitational pull of a massive object circling it.
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天文学家不可能借助望远镜看到这颗行星，但他们可以测出天马星座51运行中一种不等速行动——这是由围绕它运行的大量物体的引力所引起的。 |
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Astronomers do not understand clearly how galactic spirals evolved and why they still exist.
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天文学家并不是很清楚银河旋臂是如何演化的以及它们为什么会存在。 |
