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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。 |
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Astronomers estimate the speed at which a galaxy is moving away by measuring the galaxy's redshift.
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天文学家通过测量星系的红移对其退行的速度进行估算。 |
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Astronomers expect it to continue to spin down, eventually reaching a point when its rotation will be too slow to power the radio pulses.
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天文学家预期它的自转会继续变慢，直到它慢得不足以发射无线电脉冲为止。 |
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Astronomers expect yet-undiscovered Kuiper Belt objects may rival even Pluto.
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天文学家预计柯依伯带中可能会发现比冥王星大的天体。 |
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Astronomers found the halo using NASA\'s Far Ultraviolet Spectroscopic Explorer (FUSE) satellite to peer beyond the edges of our home galaxy.
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天文学家是使用美国航空航天局的远紫外线光谱探测仪(FUSE)卫星，在我们所居住的星系边缘外发现此日冕的。 |
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Astronomers frequently refer to it as such, and in doing so they have done their students a serious disservice.
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天文学家常常把它推给都卜勒效应，这已对他们的学生造成严重的伤害。 |
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Astronomers have apparently discovered an interesting twist to one of the greatest asteroid mysteries of all time.
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天文学家很明显是已经发明了一种有趣的螺旋状，是有史以来最伟大的星状神秘事物。 |
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Astronomers have not yet fully solved the problem of what a black hole is.
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黑洞是什么，天文学家还没有完全解决这个问题。 |
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Astronomers have seen other similar X-ray blasts before, but never were able to pinpoint them at the center of a galaxy, where black holes lurk.
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天文学家们以前曾经看到过其他类似的X射线爆炸，但是从未能够确定爆炸发生在星系的中心，也就是黑洞潜伏的地方。 |
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Astronomers have used telescopes on Earth and in space to nail the precise position of a mysterious, dark object at the outer edge of our Galaxy.
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天文学家利用地面和空间望远镜精确的定位了一个神秘的暗物体就在我们星系边缘。 |
