Moulton, Forest Ray, 1872-1952 · New York, The Macmillan company · leaf 443
RODUCTION TO ASTRONOMY [ch. xi, 236 If eruptive prominences should leave the photosphere witha velocity of more than 380 miles per second, and if theyshould suffer no resistance from the reversing layer andchromosphere, they would escape entirely from the sun andpass out beyond the planets to the… … Fig. 149. — Solar prominence, August 21, 1909, reaching to a, height of80,000 miles. Photographed at the Mt. Wilson Solar Observatory. then suddenly released. Perhaps under the extreme condi-tions of temperature and pressure prevailing in the interiorof the sun, all elements, like radium under…
Astronomy
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