SSS 2008-12-04
时间：2019-01-08 作者：英语课 分类：Scientific American(十二)月
This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute.
It’s not every day we get a chance to time travel. Other than into the future at the rate of one second per second. But astronomers 2 say they’ve done a little traveling into the past. In November of 1572, legendary 3 astronomer 1 Tycho Brahe peered up at the night sky. He saw what looked like a strangely bright star in the constellation 4 Cassiopeia. It was brighter even than the nearby planet Venus. He studied that bright new star for five months, until it faded away. But what Brahe saw wasn’t a new star. It was actually an old star undergoing the brilliantly bright death of a supernova.
Scientists at the Subaru Telescope in Japan recently analyzed 5 what could be called echoes of this more than 400-year-old event. They published their research in the December 4th issue of the journal Nature. Light from the original supernova bounced off dust particles in the interstellar clouds and eventually reached us here on earth more than four centuries later. Scientists used these echoes to determine that Brahe witnessed a type Ia supernova.
Thanks for the minute for Scientific American's 60-Second Science. I'm Cynthia Graber.
- A new star attracted the notice of the astronomer.新发现的一颗星引起了那位天文学家的注意。
- He is reputed to have been a good astronomer.他以一个优秀的天文学者闻名于世。
- 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》
- Legendary stories are passed down from parents to children.传奇故事是由父母传给孩子们的。
- Odysseus was a legendary Greek hero.奥狄修斯是传说中的希腊英雄。
- A constellation is a pattern of stars as seen from the earth. 一个星座只是从地球上看到的某些恒星的一种样子。
- The Big Dipper is not by itself a constellation. 北斗七星本身不是一个星座。
- The doctors analyzed the blood sample for anemia. 医生们分析了贫血的血样。 来自《简明英汉词典》
- The young man did not analyze the process of his captivation and enrapturement, for love to him was a mystery and could not be analyzed. 这年轻人没有分析自己蛊惑著迷的过程，因为对他来说，爱是个不可分析的迷。 来自《简明英汉词典》