PTE听力口语练习-科学60秒-Jupiter’s Spot

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Jupiter’s Great Red Spot Now Just Pretty Good

听力内容:

60秒科学节目(SSS)是科学美国人网站的一套广播栏目,英文名称:Scientific American – 60 Second Science,节目内容以科学报道为主,节目仅一分钟的时间,主要对当今的科学技术新发展作以简明、通俗的介绍,对于科学的发展如何影响人们的生活环境、健康状况及科学技术,提供了大量简明易懂的阐释。

Jupiter’s Great Red Spot is looking a little puny lately. The swirling storm has been rapidly shrinking°™it’s now smaller than we’ve ever seen it.

The spot, once estimated to be 25,500 miles across, was just 10,250 miles wide when the Hubble Space Telescope last observed it. It’s also changing shape, looking more like a circle than its usual oval.

Astronomers have been tracking this contraction since at least the 1930s. But lately, the downsizing of the Great Red Spot appears to be speeding up.

The massive vortex has been a staple on the solar system’s largest planet ever since it was first recorded in the mid 1800s. Mysteries abound about the spot, such as what powers it and why is it so red. Now add to that, why is it shrinking?

One idea is that small eddies feeding into the storm are altering its internal dynamics, sapping its power. Despite its diminishing stature, however, Jupiter’s cyclone is still nothing to laugh at. It continues to reign as the largest known storm in the universe. And it could easily swallow up the entire Earth.

–Clara Moskowitz

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