What is keeping us from anchoring a cable to Earth’s surface and tethering a platform in space?
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We don’t have any material that we could make a cable out of that’s strong enough not to snap from the stress, or under its own weight. Believe me, there are scientists and engineers trying to figure out how to do this, but science isn’t magic and we still have to obey the laws of physics and chemistry. And they both say that a material strong enough and light enough to do this doesn’t exist yet. Maybe someday, but not today.
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