英语听力：自然百科 穿越银河系的旅行 Through Milky Way—33
时间：2019-01-22 作者：英语课 分类：自然百科2011年
英语课
Venus is closer to the Sun, Mars is farther from the Sun. And there is a zone in between, the blazing hot furnace Venus, the frigid 1 Mars. That zone in between we call a habitable zone and the earth lies smack 2 in that thing where water would be in liquid form, not in steam too hot, not in ice form too cold but rather a temperature that, as goldilocks said,
is just right for life.
The location of this habitable green zone depends on the star. With hot blue stars, the green zone is further out. With cooler red stars, it's closer in. Every star in the Milky 3 Way must have a habitable zone. The question is do they also have planets within them.
In 1995, something happened that was extraordinary, I’d got a call from my collaborator 4 Paul Butler and all he said was ，Jeff ，come over here, and it was a moment that I would never forget. I was silent, Paul was silent and we were just stunned 5. They are on the computer screen I saw the unmistakable signature of a planet.
Jeff / discovered the first planet around another star. But he couldn't actually see it because the planet itself was too small and dim.
Any planet orbiting a star is lost in the glare of that host star that outshines by a factor of a billion. And so instead, to detect planets, we watch the stars. And in fact, the star will wobble in space because it's yanked on gravitationally by the planet or planets orbiting that star and by watching the star alone, we can determine whether the star has planets and how far out those planets are from the host star.
adj.寒冷的，凛冽的；冷淡的；拘禁的
- The water was too frigid to allow him to remain submerged for long.水冰冷彻骨，他在下面呆不了太长时间。
- She returned his smile with a frigid glance.对他的微笑她报以冷冷的一瞥。
vt.拍，打，掴；咂嘴；vi.含有…意味；n.拍
- She gave him a smack on the face.她打了他一个嘴巴。
- I gave the fly a smack with the magazine.我用杂志拍了一下苍蝇。
adj.牛奶的，多奶的；乳白色的
- 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。
n.合作者，协作者
- I need a collaborator to help me. 我需要个人跟我合作，帮我的忙。
- His collaborator, Hooke, was of a different opinion. 他的合作者霍克持有不同的看法。