光年

The light of our galaxy is emitted from, at least, 200 billion stars converged at the existing star formation and from a great volume of stars and star clouds. It is a tremendous galaxy of whirlpool type with the confluence of a variety of interstellar materials, whose diameter is more than 7,000 light-years.

银河系是由我们所在的星系中至少2000亿颗星体和星云中的许多星体和星云所发出的光，以及各类星际物质等汇合而成的直径超过7000光年的巨型旋涡状星系。

Blasting out from the active galactic nucleus toward the upper left, the energetic jet extends about 13,000 light-years.

高能喷流从活动星系核喷向影像左上方，一直延长大约有1.3万光年远。

You know Aldebaran is not a true member of the Hyades cluster because – at 65 light-years – it is so much closer to us.

你要知道毕宿五其实并非毕星团的一员，因为65光年的距离，它更接近我们。

But Mars is just a little nearby hunk of rock in our own solar system – while Aldebaran is a mighty star, located about 65-light years away.

但是，火星只是太阳系中离我们较近的一块大岩石，而毕宿五则是距离我们有65光年的一颗神奇的星球。

This famous triple star, Alpha Centauri, is the nearest star to our sun at a little more than four light-years away!

著名的三合星，半人马座阿尔法星，是离太阳最近的星星，只有4光年多一点！

The sun's three nearest known stars are gravitationally bound in a system called Alpha Centauri that's located 4.36 light-years away.

已知跟太阳最近的三颗恒星叫做南门二，被引力束缚在同一个系统中，位于4.36光年以外。

The huge planet is called Polyphemis, which is in the galaxy of Alpha Centauri, 4.4 light years from our galaxy, as our nearest star system.

这个巨行叫做波里菲密斯，它位于半人马座的阿尔法星系，这个星系距离我们4.4光年，是离我们最近的恒星系统。

Explanation: M4 is a globular cluster visible in dark skies about one degree west of the bright star Antares in the constellation Scorpius. M4 is perhaps the closest globular cluster at 7000 light years, meaning that we see M4 only as it was 7000 years ago, near the dawn of recorded human history. Although containing hundreds of thousands of stars and spanning over 50 light-years, M4 is one of the smallest and sparsest globular clusters known. A particularly unusual aspect for a globular cluster is M4's central bar of stars.

M4是一个肉眼可见的球状星团，位于天蝎座心宿二的东面约一度位置。M4可能是最靠近我们的球状星团距离约7000光年，这意味着我们看到的是7000年以前的M4，即人类历史有文字记载的开始阶段，它跨越50光年包含有数10万颗恒星。M4是已知在尺度及包含恒星数量上最小的球状星团。M4独特之处是它中心的棒状结构。

To Mrk 205: 1,100 million light-years 340 million parsecs

距离：NGC 4319，约8千万光年；Mrk 205，约11亿光年。

Likely triggered by interactions with nearby galaxy M81, M82's intense star formation activity appears to be blowing out immense clouds of dust and PAHs extending nearly 20,000 light-years both above and below the galactic plane. M82 is about 12 million light-years away in the constellation Ursa Major.

或许是由于附近M81星系相互作用引发的，M82剧烈的恒星形成活动看上去就像正在膨胀的巨大尘埃云，多环芳香烃化合物在星系盘面上下延伸了将近2万光年。M82位于距离我们1，200万光年远的大熊星座内。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。