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Caption:: Located in the constellation Herculues, M13 is the largest and brightest globular cluster in the northern sky, third in the whole sky, after the Omega Centaurus and 47 Tucanae.
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位于武仙座的球状星团M13，是北天球最大最亮的球状星团，在全天排行第三，仅次于南天球的半人马座奥米加星团，杜鹃座47。 |
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Caption:: Noctilucent clouds is the name night-shinning cloudsin Latin, as its name suggest, it glow in electric bluw in deep twilight.
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夜光云属于罕有的大气现象，首次于1885年被发现，顾名思义，是一层在夜间发光的云。 |
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Caption:: On 2002, after more than three years of inactivity, the Hubble Space Telescope Near Infrared Camera and Multi-Object Spectrometer (NICMOS) has reopened its near-infrared eyeson the universe, snapping several breathtaking views, from the craggy i
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哈勃太空望远镜的红外线眼睛－近红外线相机及多重天体光谱仪，终于重新运作，利用红外线波段，我们能够看到不少人类肉眼看不到的东西，如躲在尘后的星光。 |
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Caption:: Orbiting around Jupiter in front of the swirling Jovian clouds at a distance of 350,000 kilometers, owing to the tidal heating between Jupiter and 3 other Jovian moons, Io is the most vocanic body in the Solar System.
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在木星延绵不断的云层上方35万公里处公转，因为木星与三颗木卫的潮汐加热作用，令艾奥成为太阳系中火山活动最活跃的天体。 |
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Caption:: Our Milky Way Galaxy has a diameter of a hundred thousand light years. It contains over 200 billions of stars that form a milky shining band across the night sky.
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我们身处的银河系，直径达十万光年，位于其内的超过二千亿颗恒星在夜空中形成一条乳白色的亮带，横跨天际。 |
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Caption:: Some stars in the night sky are compacted into a region, called the Milky Way, this milky patch of the sky span across the sky, brightly shine under the dark night.
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天上的繁星聚集于一个密集的地方，称为银河，这条奶白色的星带横夸整个天空，夏天的银河较为光亮，只要在黑暗的夜空下非常光亮。 |
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Caption:: Star trails record the motions of the stars in the night sky through long exposure.
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星流迹是固定摄影中的一种，透过长时间的曝光，把天空上的凡星所走的轨迹也拍下来。 |
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Caption:: String theory has already been used in cosmology, according to string theory, prospecting untold numbers of separate universes with different physical laws, and some theorists believe, string theory is the most promising candidate ultimate theor
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弦理论的发展已引进宇宙学的理论中，弦学者对宇宙予以解释，宇宙可能存在著无限个，每个拥有著完全不同的物理定律，部份理论学家相信，弦论是一套可能可以解释世界万物的终极理论。 |
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Caption:: Sunlight shine on Earth by the reflection of Moon is not little, moonshine can bring brightness in the dark, in the photo, the cloud is illumined by the moon.
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月球所反射到地球上的太阳光绝对不能少看，月亮的光芒能为黑夜带来光明，照亮大地，图中是月夜下受月照下的云海。 |
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Caption:: The dramatical phenomenon, is characterised by having a dashing luminance in the upper layer of the atmosphere, created by the collisions of energetic particles of solar wind with the atoms and molecules in the polar areas.
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当太阳风被地球磁场引领至两极地区，与地球大气层的粒子发生碰撞时，便会形成极光，宛如一张色彩斑澜的轻妙扫过夜空，绚丽夺目。 |
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Caption:: The profile of the atmosphere and the setting sun is featured in this image photographed by an Expedition 13 crewmember on the International Space Station.
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国际太空站的太空人在太空中所见的日落，太阳在地球薄薄的大气中徐徐落下。 |
