本帖最后由 白熊1 于 2014-4-14 16:40 编辑
所以我理解,问题的关键是长城并非唯一可见人造物。能看到很多。这应该归功于2010年太空站观景台提供了一个专用的观测平台。杨利伟没看到,也是实情,不过那次是升空试验,而不是观测试验。
《REMARKS BY THE PRESIDENT IN CONVERSATION WITH INTERNATIONAL SPACE STATION CREW
AND SPACE SHUTTLE ENDEAVOUR CREW VIA SATELLITE》
http://www.nasa.gov/topics/shutt ... iss_transcript.html
THE PRESIDENT: Yes, the rumor was, is that you can see the Great Wall from space, but I'm not sure that's true. So are there at least -- if there aren't manmade landmarks, are there some natural landmarks other than continents that you can see?
FLIGHT ENGINEER: Yes, Mr. President and Joseph, that's a great question. Actually, one of the great -- in this mission, we have a great window, big window, that we are really fascinated by the great view of the Earth. And, yes, we can see a lot of great landmarks. We can see the Golden Gate Bridge, the great skyscrapers in New York. And the Grand Canyon is just breathtaking. And also while in the night pass we can see all the lights -- that means that the humans are active even in the night. And this is a great benefit that we all benefit from, being in space. |