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...early this year, the U.S. Air Force came to Bowen's rescue. A pair of U-2s visiting Australia carried his dust filters on 16 cruises to 70,000 ft. over the Antarctic Ocean, far from land. The filters came back containing dust that could hardly have come from the ground. Some U-2 nights carried a special camera that photographed what looked like a thin layer of dust far up in the upper atmosphere...
Nowhere but Space. Bowen believes that the dust collected by the U-2s at 70,000 ft. could have come from nowhere but space. During meteor showers, he feels sure, the smallest meteoric particles hit the atmosphere softly and sink slowly toward earth. Larger meteors burn up, their smoke-fine debris sinking with the rest. The particles take about 30 days to reach the lower atmosphere, where they then turn clouds into rain...
...meteorologists are not yet convinced by Bowen's revolutionary theory, but there are few who still deride it rudely. Many are reserving judgment until the particles collected by the U-2s have been positively analyzed and identified as space dust. Then will come the additional job of proving that the space dust can and does cause rain. But Bowen and a growing army of believers are sure that this final proof is not far ahead...
...subsonic jet, the airframe makers are haunted by another specter: the projected supersonic jet transport. To build a plane tough enough to withstand Mach 2 speeds would pose such immense problems that Boeing estimates development costs at $800 million. The most optimistic guess of the potential market for Mach 2s is only 450 planes by 1975; one longtime airline operator puts it as low as 50 ("a national prestige item"). There is every indication that the airframe manufacturers do not need two burnings by jet to learn their economic lesson, will steer clear of the Mach 2 until they...
...2s. 3d. 23|?25 11s. 9d. 23/2...