Word: beams
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...astronomer who discovered in the 1920s that the universe is expanding, the space telescope has a mirror 2.4 meters (7.9 ft.) in diameter that will focus light on an array of cameras and instruments. After recording and analyzing the radiation, the instruments will translate it into electronic impulses and beam it down to earth at a prodigious rate -- fast enough to fill a 30-volume encyclopedia in 42 minutes. Moreover, the Hubble will literally view the stars in a new light: the space observatory can see ultraviolet radiation that fails to reach ground telescopes because it is largely blocked...
...lack cable TV. But last week four communications companies disclosed plans for a $1 billion satellite service that could transform American viewing habits when it becomes available in 1993. The four partners -- NBC, Cablevision Systems, Hughes Communications and Rupert Murdoch's News Corp. -- said their Sky Cable service will beam 108 channels to homes equipped with a 12-in. by 18-in. rectangular dish that will cost about $300. Users of the new system, which could carry high-definition TV signals and digital-quality sound, will pay a monthly fee, but the amount has not yet been...
...plan is to beam TV Marti's signal to the Havana area from a tethered blimp floating two to three miles above the Florida Keys. But still unresolved technical hitches have postponed TV Marti's 90-day test run three times, and the service is now scheduled to begin sometime in March. Even then, however, Cuban couch potatoes may be stymied by their government. Castro has promised not only to jam transmissions but also to retaliate against this "imperialist ideological tele-aggression," probably by flooding American AM radio frequencies with Cuban programs...
...missiles are heat seekers. Air Force One must also be protected against radar-directed air-to-air missiles, like the French-built R-530s that Colombian air force jets are known to carry. These rockets spot their prey with radar beams and follow the echoes toward the target. One way to divert a missile flying along a radar beam is to fire off a burst of metallic chaff particles. They cause the missile's radar guidance system to go haywire amid a blizzard of electronic gibberish...
...affiliate WCVB in Boston, news shows accounted for 39.5% of the station's revenues last year. WCVB boasts that it has the largest news staff of any U.S. station -- 350 reporters, producers, anchors and technicians -- as well as two trucks equipped with satellite uplinks to beam stories back to the station from remote locations. News departments at dozens of U.S. stations today own their own satellite-transmitting trucks, up from only a handful five years...