Elon Musk is considered by many to be visionary – a pioneer of private exploration, and the man behind the Hyperloop concept to shoot people from Los Angeles to San Francisco in a metal tube in only 35 minutes. But there are some ideas that even he believes are too far-fetched. A space elevator is one of them. “This is extremely complicated. I don't think it's really realistic to have a space elevator,” said Musk during a conference at MIT last October, adding that it would be easier to “have a bridge from LA to Tokyo” than an elevator that...
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