英语听力：探索发现 科学新发现：我们的大气层-5（在线收听） |
英语听力,探索发现,科学新发The mission had been a stunning success: Kittinger skydiving record stands to this day. He takes his first deep breath of air with a new found appreciation for our atmosphere. It was relief to be back on the planet Earth that we love so much, a planet that has an atmosphere that we can live daily. Kittinger forged a dizzying path through the atmosphere. Our journey begins just a few feet off the ground with the air we breathe. We take for granted Earth’s blend of gases, the perfect mix for heat and energy.
And astronomer David Grinspoon believes we’d hard pressed to find its equal anywhere. The more we learn about planets, we more we learn that they’re, they’re all individuals, they are like people in that sense.
So as far as what we know now, Earth’s atmosphere is completely unique. In the past century, telescope and space probes have uncovered the extreme atmospheres of our neighbouring planets. A journey across our solar system reveals exactly how unusual Earth is. Clouds of near frozen gas flow over the icy surfaces of Uranus and Neptune, while the sun has blasted away the atmospheres of Mars and Mercury. To me it seems as though Mercury doesn’t have an atmosphere at all. In fact that if you were on the surface of Mercury, it would look to you as if you were out in outer space. 现,我们的大气层 |
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