Word: detectable
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Elsewhere, rural communities are trying to win back urban migrants, but as yet the demographers detect no significant wave of remigration. Nor will there be one until rural America, as Thomas Jefferson once described it, is once again conducive to "the multiplication of men susceptible of happiness, educated in the love of order, habituated to self-government, and valuing its blessings above all price...
Better Focus. To obtain their proof, Stephen Little of the University of Texas and Astronomer Ronald Schorn of the Jet Propulsion Laboratory turned to the same kind of tools that they and other scientists had previously used in attempts to detect Martian water: the telescope and the spectrograph, which breaks light into its rainbow (spectrum) of colors and records it on a photographic plate. With the aid of a $100,000 NASA grant, mirrors had just been refinished on the 82-in. McDonald telescope, bettering its focusing by a factor of three. The optics of the spectrograph had also been...
...Does anyone really believe that if Russia wanted to attack us she would start shooting from far-off Europe, giving us ample time to detect the attack and return it, as well as giving us a good opportunity to knock down her missiles...
...more likely that she would sneak her missiles right up to our shores on her many hundreds of submarines, merchant ships, and fishing trawlers and knock us out before any $400 billion ABM system could detect the attack, much less block...
...will be compared to actual conditions on the ground and will help scientists plan an unmanned earth-resources satellite that the Interior Department hopes to launch in 1971 or 1972. With such satellites, officials plan to make a worldwide inventory of natural resources, track ocean currents, measure soil moisture, detect new mineral deposits and derive other benefits that should help pay back the enormous costs of the space program...