Word: corona
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Like a great dahlia, the sun is ringed with petals of light. The inner corona, one-millionth as bright as the sun's heart, is dazzling yellow, the outer corona pearly white, with delicate, wraithlike streamers. Often the corona is racked by violent eruptions that produce magnetic storms through the earth's atmosphere. But it is impossible to detect such phenomena with an ordinary telescope, for the sun's brilliance obscures its crown. For years astronomers rushed to the ends of the earth, chasing eclipses so they could photograph the corona for a few minutes while...
Although the origin of the light in the corona is unknown, Professor Menzel said that there is a direct relation between great upheavals in the sun's corona and the occurrence of magnetic storms on earth...
...station will be equipped with a coronagraph, a new instrument for creating artificial solar eclipses and making possible regular observations of the corona, mysterious halo surrounding the sun, and also of other phenomena of the sun's atmosphere. This instrument is the only one of its kind in the Western Hemisphere...
...studies of the solar corona will have an immediate practical importance for the forecasting of such widespread electrical storms as that which crippled the world's communication services on Easter Sunday, according to Donald B. Menzel, professor of Astrophysics...
Other equipment at the station will include a powerful spectrograph to observe the spectrum of the corona. Color filters as well as movies will be used to record how the corona changes from day to day and how its streamers project into space...