科学美国人60秒 SSS 抱住大星系的大腿
时间：2019-02-14 作者：英语课 分类：2017年Scientific American(二)月
Our galactic home, the Milky 1 Way, is big. Mostgalaxies are far smaller. And it’s not easy being one of those little galaxies 2—a big galaxy 3’s gravity can rob their gas. And gas creates new stars, so losing gas spells the end of star-making. That's what happened to nearly all the small galaxies orbiting the Milky Way.
银河，是很大的。但大部分银河系星系都是超小的呢。而且要成为那些小星系中的一员还挺不容易——大星系的重力能够抢夺它们的气体层。而气体能够创造恒星，所以气体流失就意味着无法制造恒星。这就是所有围绕着银河系的那些小星系上面正在上演的悲剧。
But a small galaxy can still succeed. Take the example of Leo P. Discovered in 20052013, the galaxy Leo P lies some 5.3 million light-years from Earth. And it contains only about a hundred-thousandths as many stars as the Milky Way. But it’s thriving nevertheless.
但是小星系还是有机会逃脱的。比如2005年发现的这颗Leo P 。这颗星系Leo P 坐落在距离地球五百三十万光年的距离。并且它只含有银河系所含恒星数量的千分之一百。但它现在依然欣欣向荣的存在着。
So what’s Leo P's secret for success? Pretty simple: steer 4 clear of gas-grabbing big galaxies. Leo P still has lots of gas. In fact, Leo P's gas outweighs 5 its stars. Astronomers 6 used the Hubble Space Telescope to study the small galaxy and published their findings recently in The Astrophysical Journal.
那么它能幸存的奥秘呢?十分简单：牢牢抱紧吸气的大星系的大腿。Leo P 现在还有不少气体。实际上，Leo P 的气体比它所含恒星还多。天文学家们利用哈勃天文望远镜研究了这些小星系并且已经将他们的研究发现发表在《天文物理杂志上》。
All that gas means that Leo P can keep making new stars. So the diminutive 7 galaxy has a bright future, as long as it keeps obeying the number one rule of survival: don’t let any behemoths siphon off your gas.
有这些气体就意味着Leo P 能不断创造新恒星。所以这个小型星系无疑是有前途的孩纸，只要它保持遵守生存法则第一条：坚决抵抗虹吸气体的侵略行为。
- Alexander always has milky coffee at lunchtime.亚历山大总是在午餐时喝掺奶的咖啡。
- I like a hot milky drink at bedtime.我喜欢睡前喝杯热奶饮料。
- Quasars are the highly energetic cores of distant galaxies. 类星体是遥远星系的极为活跃的核心体。
- We still don't know how many galaxies there are in the universe. 我们还不知道宇宙中有多少个星系。
- The earth is one of the planets in the Galaxy.地球是银河系中的星球之一。
- The company has a galaxy of talent.该公司拥有一批优秀的人才。
- If you push the car, I'll steer it.如果你来推车，我就来驾车。
- It's no use trying to steer the boy into a course of action that suits you.想说服这孩子按你的方式行事是徒劳的。
- Her need to save money outweighs her desire to spend it on fun. 她省钱的需要比她花钱娱乐的愿望更重要。 来自《简明英汉词典》
- Its clarity in algebraic and analytical operations far outweighs any drawbacks. 文化代数和解析运算中的清晰性远远胜过任何缺点。 来自辞典例句
- Astronomers can accurately foretell the date,time,and length of future eclipses. 天文学家能精确地预告未来日食月食的日期、时刻和时长。 来自《简明英汉词典》
- Astronomers used to ask why only Saturn has rings. 天文学家们过去一直感到奇怪，为什么只有土星有光环。 来自《简明英汉词典》
- Despite its diminutive size,the car is quite comfortable.尽管这辆车很小，但相当舒服。
- She has diminutive hands for an adult.作为一个成年人，她的手显得非常小。