阅读理解
a
体裁 |
科普文 |
题材 |
地球变暖 |
词数 |
381 |
move earth—it’s not science fiction
this idea for improving our climate comes from a group of us national aeronautics and space administration(nasa)engineers and american astronomers. they say their plan could add another six billion years to the useful lifetime of our planet—effectively doubling its working life.
the plan put forward by dr. laughlin, and his colleagues don kory can sky and fred adams, needs carefully directing a comet or asteroid so that it passes close by our planet and sends some of its gravitational energy to earth.
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