PTE Re-tell Lecture 真实讲座练习题:天文学

在PTE中,无论是Summarise Spoken Text 还是 Re-tell Lecture的考题大都是从真实的讲座或者演讲中截取的,中间经常经常夹杂很多不同的环境音.很多同学都反映有时未必是听不懂,而是听不到. 鉴于此,墨尔本文波雅思PTE专门为大家总结了真实讲座的PTE练习音频,相比新闻音频来说,整体更加接近PTE考试的真题,内容方面,我们也会为大家提供考试中存在的近似题,最近我们会持续更新,敬请期待!

Edwin Hobble also created a classification for galaxies that we astronomers and probably not just astronomers but layman too known as the Hubble sequence. So what I mean when I say sequence, the classification employed is based on the forms of the photographic images blablabla… irregular.

The sequence is composed of two sections: the elliptical nebula and the spirals which merge into one another and I’ll point out this is actually one Hubble setting in the prime focus of the two hundred inch Palomar. So why I don’t want Hubble dead was not only did he proved that things like Andromeda were outside of the Milky Way, he actually was also able to show to classify those galaxies and put those galaxies into a sequence. And unfortunately when he did this back in the day he thought the sequence work this way that the ellipticals became spirals turns out modern time we know that it was the opposite so even if you are Edwin Hubble you make mistakes, take that too when you have to take your SAT


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