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Updated: May 27, 2025
Dabney disavows us unless we are successful. Let us let it go at that." Then he said: "The observatory's set to track?" A muffled voice said boredly, by short-wave from the observatory up on the crater's rim: "We're ready. Visual and records, and we've got the timers set to clock the auto-beacon signals as they come in." The voice was not enthusiastic.
Cochrane had had to put up his own money to have the nearside lunar observatory put a low-power telescope to watch the rocket's flight. In theory, this distress-rocket should make a twenty-mile streak of relatively long-burning red sparks. A tiny auto-beacon in its nose was set to send microwave signals at ten-second intervals. On the face of it, it had looked like a rather futile performance.
And then in the phones there came the relayed signal of the auto-beacon in the vanished rocket. The signal-sound was that of a radar pulse, beginning at low pitch and rising three octaves in the tenth of a second. At middle C the middle of the range of a piano there was a momentary spurt of extra volume. But in the relayed signal that louder instant had dropped four tones.
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