SSS 2010-11-18
时间：2018-12-24 作者：英语课 分类：Scientific American(十一)月
This is Scientific American’s 60-Second Science. I’m Christopher Intagliata. Got a minute?
Astronomers 1 have already discovered hundreds of exoplanets. But make way for the new kid, which is orbiting a kind of star that models say it shouldn’t.
Researchers found the exoplanet while looking at the star HIP 2 13044—or Sergio, for Star of Extra-Galactic Origin. It’s in what once was a separate galaxy 3, which the Milky 4 Way gobbled up billions of years ago.
The scientists saw Sergio wobbling due to the gravitational tug 5 of a Jupiter-sized gas planet, which the scientists dubbed 6 Sergio Junior. They detail their find in the journal Science.
You don’t ordinarily find planets hanging around a star like Sergio. First, it's really old—past the Red Giant phase, when stars balloon in size and swallow up planets in close orbits. And planets tend to form around metal-rich stars, like our Sun. But Sergio has only one percent the metal content of our Sun. That doesn't jibe 7 with one widely accepted model of planetary formation.
The Sergios may offer a glimpse of the future of our own planetary system—in about five billion years. We hope to be back then with an update.
Thanks for the minute. For Scientific American’s 60-Second Science, I’m Christopher Intagliata
- 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》
- The thigh bone is connected to the hip bone.股骨连着髋骨。
- The new coats blouse gracefully above the hip line.新外套在臀围线上优美地打着褶皱。
- 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。
- 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。
- We need to tug the car round to the front.我们需要把那辆车拉到前面。
- The tug is towing three barges.那只拖船正拖着三只驳船。