【名师带你背单词】TED Talk精选《如何在其他星球寻找生命》Part2/3,曼拓教育微信公众号文章

Donovan老师

今天我们来看看这篇在PTE听力中常考的天文类文章。

How we'll find life on other planets （Part 2/3）

相关学科：天文学

Source：

http://www.ted.com/talks/aomawa_shields_how_we_ll_find_life_on_other_planets

Donovan老师

下面带着对这些单词和短语的理解，尝试读一读下面的原文，看看是不是容易理解多了呢？

We don't know what the atmospheres of these planets are like because the planets are so small and dim compared to their stars and so far away from us. For example, one of the closest planets that could support surface water -- it's called Gliese 667 Cc -- such a glamorous name, right, nice phone number for a name -- it's 23 light years away. So that's more than 100 trillion miles. Trying to measure the atmospheric composition of an exoplanet passing in front of its host star is hard. It's like trying to see a fruit fly passing in front of a car's headlight. OK, now imagine that car is 100 trillion miles away, and you want to know the precise color of that fly. So I use computer models to calculate the kind of atmosphere a planet would need to have a suitable climate for water and life.

Here's an artist's concept of the planet Kepler-62f, with the Earth for reference. It's 1,200 light years away, and just 40 percent larger than Earth. Our NSF-funded work found that it could be warm enough for open water from many types of atmospheres and orientations of its orbit. So I'd like future telescopes to follow up on this planet to look for signs of life.

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