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Updated: May 19, 2025
With contragravity, of course, terms like "escape-velocity" and "mass-ratio" were of purely antiquarian interest. "How long," he asked Pearson, "would it take to fit that vehicle with a full set of detection instruments radar, infrared and ultraviolet vision, electron-telescope, heat and radiation detectors, the whole works and spot it about a hundred to a hundred and fifty miles above Keegark?"
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