那意味着我们最近的邻居星球离我们大约有100光年远，从天文学的角度来说，这几乎是一墙之隔。
That means that our nearest neighbours are perhaps 100 light years away, which is almost next door in astronomical terms.
在宇宙中最引人注目的能量工厂——距离地球数十亿光年的类星体和伽马射线爆发——中寻找这些物质的来源似乎是明智的。
It would seem sensible to seek the source of these in the universe's most conspicuous energy factories: quasars and gamma-ray bursts billions of light-years away from Earth.
第一个是一对质量与木星差不多的行星，这对行星步调一致地围绕距离地球15光年的母恒星旋转。
The first is a pair of planets, each about the mass of Jupiter, that whirl around their home star 15 light years from Earth in perfect lockstep.
这颗系外行星位于54光年以外，是“超级地球俱乐部”的又一个成员[来源:NASA]。
Located 54 light-years away, the exoplanet is yet another member of the super-Earth club [source: NASA].
这幅高清望远镜图像显示的是距地15 000光年的半人马座欧米伽球状星团（NGC 5139）。
Featured in this sharp telescopic image, globular star cluster Omega Centauri (NGC 5139) is some 15, 000 light-years away.
在经典黑暗星云中，蛇是星际气体和尘埃组成的卷须，长约650光年。
A classic dark nebula, the Snake is a tendril of interstellar gas and dust about 650 light years away.
离太阳最近的恒心是半人马座（即比邻星），它与太阳相距4光年。
The nearest star to our own is Proxima Centuari and it lays just over 4 light-years away.
这片星云距离地球5，800光年，是一组八百万年前诞生的相对年轻的恒星的家园。
The nebula lies about 5,800 light-years from Earth and is home to a cluster of relatively young stars born about eight million years ago.
参宿四，是距离地球640光年的猎户星座中的一颗红巨星，这意味着它的生命将会因为爆炸而即将结束。
Betelgeuse, which is part of the Orion constellation 640 light years away from Earth, is a red supergiant, meaning that it is nearing the end of its life and is due to explode.
格利泽581是一颗红矮星距离地球20.5光年。
距太阳第二近的恒星是比邻星，距离为4.2光年。
The next-closest known star to the Sun is Proxima Centauri, located 4.2 light years away.
GD 362是颗白矮星，距离地球150光年，也在银河系。
The star was a White Dwarf called GD 362, and it's 150 light years from Earth, still within our galaxy.
距离大熊星座约1千2百万光年的波德星系是从地球上通过望远镜看到的最明亮的星系之一。
Located about 12 million light-years away in the Ursa Major constellation, M81 is among the brightest of the galaxies visible by telescope from Earth.
5500光年远处，猫爪星云是一个发射星云，红色来源于其丰富的电离状态的氢原子。
At 5, 500 light years distant, Cat's Paw is an emission nebula with a red color that originates from an abundance of ionized hydrogen atoms.
Kronberger 61距离地球大约13,000光年，是天鹅座的一名“成员”。它几近完美的球形；相较于其他3,000余行星星云，它可谓十分不同寻常。
Kronberger 61 lies roughly 13, 000 light-years away in the Cygnus constellation and is almost perfectly round-an oddity when compared with the other 3, 000 or so planetary nebulae already discovered.
这个星体被命名为WISE1828 + 2650，位于距离我们太阳40光年的距离内，并且是迄今已知的最冷的褐矮星。
Cataloged as WISE 1828 + 2650, it lies within 40 light-years of the Sun and is currently the coldest brown dwarf known.
天蝎座pi是一个三星系统，距地球500光年。
It is actually a triple-star system about 500 light-years away.
当然，那条线是由气体、尘埃、恒星组成的约22000光年长的宇宙余迹。
Of course, that string is a cosmic trail of gas, dust, and stars about 22, 000 light-years long.
这家伙跨度有5万光年，可能是我们星系中心的一个超大号黑洞爆炸后的残留。
The feature spans 50, 000 light-years and may be the remnant of an eruption from a supersized black hole at the centre of our galaxy.
这是一次距地球16万光年的爆发，最重要的是，中微子和光子几乎同时到达地球。
This was an explosion about 160, 000 light years from earth. The thing is, the neutrinos and the photons from the explosion reached us at almost exactly the same time.
宇宙中已知的最大的星系是巨椭圆星系，可能长2百万光年。
The universe's largest known galaxies are giant elliptical galaxies, which may be as much as two million light-years long.
这是一次距地球16万光年的爆发，最重要的是，中微子和光子几乎同时到达地球。
This was an explosion about 160,000 light years from earth. The thing is, the neutrinos and the photons from the explosion reached us at almost exactly the same time.
M13是超过十万颗恒星的家园，距我们25000光年。
M13 is home to over 100, 000 stars and locatedat a distance of 25, 000 light-years.
M 13是超过十万颗恒星的家园，距我们25000光年。
M13 is home to over 100,000 stars and located at a distance of 25,000 light-years.
M 13是超过十万颗恒星的家园，距我们25000光年。
M13 is home to over 100, 000 stars and located at a distance of 25, 000 light-years.
右边的怪物，实际上是无生命的气体和尘埃柱，据测长度超过一光年。
The monster, on the right, is actually an inanimate pillar of gas and dust that measures over a light year in length.
这张照片是多张钱德拉天文台的照片合成的，显示的是130光年远的银河系的中心部分。
This image was produced by combining a dozen Chandra observations made of a 130-light-year region in the center of the Milky Way.
大约在44百万光年之外是NGC 5866纺锤状星系，照片所显示的是其侧缘。
About 44 million light years away sits NGC 5866, the Spindle Galaxy, seen here in an edge-on view that reveals its thinness.
大约在44百万光年之外是NGC 5866纺锤状星系，照片所显示的是其侧缘。
About 44 million light years away sits NGC 5866, the Spindle Galaxy, seen here in an edge-on view that reveals its thinness.
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