这是第四个与美国宇航局氏大天文台决赛。
这张合成图像使用来自美国宇航局的大天文台三个数据。
This composite image uses data from three of NASA's Great Observatories.
它是由图像所采取的三项美国宇航局的大天文台，利用三种不同波段的光。
It is made up of images taken by three of NASA's Great Observatories, using three different wavebands of light.
为了解决在海上计算经线的问题，1675年英格兰国王查理二世下令建造了皇家格林尼治天文台，同时他还悬赏了一大笔奖金，给予第一个发明出在海上也能准确计时的钟表的人。
He offered an enormous cash prize to anyone who could build a clock that would remain accurate at sea.
南极天文台三大观测宇宙的天文台之一，旨在检测由宇宙大爆炸而产生的大量存在于微光辐射中的扭曲现象，利用天文望远镜对宇宙射线背景进行筛选，再利用星系群的特点确定一个点，即当宇宙射线穿过极热气体时会产生轻微混乱，混乱的那一刻就是所要找的那个点。
The telescopes sift through the background cosmic radiation to find spots where it has been slightly perturbed as it passes through extremely hot gas, a hallmark characteristic of galaxy clusters.
三周后，用坐落在蒙那亚克山上的凯克天文台的十米级望远镜、哈勃太空望远镜以及其他的大孔径望远镜可以证认候选体的特性。
The three-week delay guaranteed that he could confirm and characterize the candidates at the 10-m telescope at the Keck Observatory on Mauna Kea, the HST, or another powerful telescope.
天文台台址必须精心选择，否则价格昂贵的大望远镜不能充分发挥其功效，只能起到小望远镜的作用。
So, the astronomical site must be selected carefully, otherwise the large telescope of cost can't display its function fully, but can play the role of the small telescope.
牛顿是不许别人回答“不”字的，他自封为皇家天文台的大总管，然后迫使立即出版这些数据。
Newton would not take no for an answer: he had himself appointed to the governing body of the Royal Observatory and then tried to force immediate publication of the data.
例如，1722年大堂里就有一个非正式的天文台。
In 1722, for example, the hall housed an informal observatory.
例如，1722年大堂里就有一个非正式的天文台。
In 1722, for example, the hall housed an informal observatory.
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