Word: solarity
(lookup in dictionary)
(lookup stats)
Dates: during 1960-1969
Sort By: most recent first
(reverse)
...first observed to emit intense radio radiation in 1942. At the end of World War Two the advances in radio receivers were turned to peaceful studies of extra-terrestrial signals. Astronomical radio telescopes were set up to observe solar radio waves at fixed frequencies, recording changes in signal intensity...
...soon found that at some frequencies the solar signal remained quite steady, while in other areas of the radio spectrum the intensity might suddenly become a million times more powerful. These giant outbursts appeared to be associated with sunspots which could be seen on the sun's surface with optical telescopes. In 1949, J. P. Wild and L. L. McCready made the first sweep-frequency observations of the sun at Dapto, Australia, 20 miles south of Sydney. Instead of recording radiation at a single of fixed frequency, their receivers were able to record intensity at all frequencies from...
...United State Air Force and the Harvard College Observatory agreed on a joint project for a solar sweep-frequency observatory in the U.S. The Air Force supplied the funds and Harvard was in charge of the research. Dr. Alan Maxwell, a young New Zealand physicist who had been trained in radio astronomy at Britain's Jodrell Bank station, became the director of the project...
Another obstacle stands in the way of manned flight into space in 1969, an obstacle which no expenditure can overcome: the sun. The end of this decade will be a maximum in the sun's eleven year cycle of activity. At unpredictable times during the solar cycle's peak, cataclysmic eruptions on the sun eject clouds of deadly high-energy particles deep into space. The chance of such an event occuring during a one-week lunar journey in 1969 will probably be about one to three, odds on which the U.S. has neither the right nor the wish to risk...
Another unknown that worries many scientists is the lunar surface. No one knows what the moon is made of, and no one can be sure what its surface is like after a 4-billion-year bombardment by sunlight, X rays, solar particles, cosmic rays and meteorites. The moon may be dust or solid rock, or something in between, like popcorn. It may be smooth or jagged all over. It may be radioactive or covered with highly reactive chemicals. It may have properties that do not exist on earth and that earthlings cannot imagine. A two-man spacecraft to land...