Word: arecibo
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...South Africa can be found in a series of charges and counter-charges leveled in 1979. On September 22 of that year, a U.S. Vela Satellite linked to the Los Alamos Observatory recorded an atmospheric nuclear explosion in the South Atlantic. A radio telescope at the U.S. observatory in Arecibo, Puerto Rico, and the U.S. Navy Research Laboratory both picked up signs of the blast as well. At a CIA briefing to Congress, it was revealed that a South African naval task force had been in the area in question at the time. That part of the sea is avoided...
...surprising indications of sulfur molecules. Said University of Maryland Astronomer Michael A'Hearn: "The sulfur may be one of the few things we see that actually reside in the comet's nucleus." The most stunning observational feat came when the big, 1,000-ft. radio telescope in Arecibo, PR., managed to bounce radar waves off the fleeting object and perhaps settled the old argument over whether cometary nuclei are gaseous or solid. Said Harvard's Fred Whipple, dean of American comet watchers and chief proponent of the dirty-snowball theory: "The radar proves to my satisfaction that...
...achievement of Taylor and his colleagues, Peter M. McCulloch and Lee A. Fowler, was a triumph of radio astronomy. In 1974, while scanning the heavens with the giant bowl-shaped radio telescope near Arecibo, Puerto Rico, the researchers detected rhythmic radio signals from the constellation Aquila. The bursts were coming from a pulsar, or rapidly rotating neutron star-the incredibly compressed cadaver of a giant star whose nuclear fires have died out. Some 15,000 light-years away, it apparently was in orbit around a second compact object, perhaps another neutron star or even a black hole, whose gravity...
...eight hours at a velocity of 1.06 million k.p.h. (660,000 m.p.h.), would move ever closer, causing a shortening in their orbital period. The loss, to be sure, would be infinitesimal: only one ten-thousandth of a second per year, as determined from the pulses picked up by the Arecibo...
...will then radio the radar data back to earth, where scientists hope to produce a topographic map of 35% of the hidden Venusian surface showing details 100 meters (330 ft.) high and 16 km (10 miles) across. Earlier radar scans of the surface by the giant radio telescope at Arecibo, Puerto Rico, indicate that Venus is pockmarked with craters, possibly active volcanos and great lava flows...