SSS 2010-06-30
时间：2018-12-24 作者：英语课 分类：Scientific American(六)月
This is Scientific American’s 60-Second Science. I’m Cynthia Graber. This will just take a minute.
It’s a plotline worthy 1 of an action film—galaxies 2, violently torn apart, smashing into one another, leaving remnants of themselves behind billions of years later. That’s the scene that accounts for some of the oldest stars in our own Milky 3 Way galaxy 4, according to work published in the journal Monthly Notices of the Royal Astronomical 5 Society.
Researchers ran a huge computer simulation of the evolution of the universe starting shortly after the big bang, more than 13 billion years ago. It’s the most detailed 6 model ever produced, and allowed a close examination of the make-up of the Milky Way’s stellar halo. The stellar halo is debris 7 that surrounds our familiar white swirl 8 of stars. The halo is much larger and much older than the Milky Way itself.
And the simulations show that the ancient stars in the halo were formed from young, small galaxies that collided and left behind fragments of themselves, as opposed to those stars actually being born in the Milky Way when it started forming 10 billion years ago. The researchers say the scene depicts 9 the dramatic—and violent—clashes that were taking place long, long ago, in a galaxy not very far away.
Thanks for the minute for Scientific American’s 60-Second Science. I’m Cynthia Graber.
- I did not esteem him to be worthy of trust.我认为他不值得信赖。
- There occurred nothing that was worthy to be mentioned.没有值得一提的事发生。
- 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。
- 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。
- 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。
- He was an expert on ancient Chinese astronomical literature.他是研究中国古代天文学文献的专家。
- Houses in the village are selling for astronomical prices.乡村的房价正在飙升。
- He had made a detailed study of the terrain.他对地形作了缜密的研究。
- A detailed list of our publications is available on request.我们的出版物有一份详细的目录备索。
- After the bombing there was a lot of debris everywhere.轰炸之后到处瓦砾成堆。
- Bacteria sticks to food debris in the teeth,causing decay.细菌附着在牙缝中的食物残渣上，导致蛀牙。