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Could you please tell me the sources where you got those numbers from? If there's no year with them telling in what year the estimate was made in a few years they won't be very useful anymore because of inflation. Moreover conventional ways of launching to geosynchrous orbit could become much cheaper
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Have a little question for you. In the article Space elevator under the heading "Materials" there is the following sentence: With Space
Elevators like this, Humans can send materials into orbit at a fraction of the current cost (from around $ 30000 today to $ 3 per kg, a factor of 10!).
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You added the numbers. Could you tell me from what source you have the figure $ 30,000? I guessed you had the $ 3 per kg with a space elevator from the webpage of NASA which was the only webpage in the article when you added those numbers. But when I went to this webpage
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I couldn't find the number $ 3 per kg. In the pdf on that webpage I found "<$ 10/kg" and also a cost only based on the energy consumption of this type of space elevator "$ 1.48/kg".
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Thanks for asking. I'll put the answer to your talk page. --
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