Popular Astronomy, Volume 51Goodsell Observatory of Carleton College, 1943 |
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Page 122
... miles . R = 62.5 miles or D = 125 miles . * MASS OF THE METEORITE The density of the meteorite is assumed to be 3.4 and R = 62.5 miles . These lead to a mass of 1.4 X 1022 grams . DEPTH TO WHICH THE METEORITE PENETRATED It is extremely ...
... miles . R = 62.5 miles or D = 125 miles . * MASS OF THE METEORITE The density of the meteorite is assumed to be 3.4 and R = 62.5 miles . These lead to a mass of 1.4 X 1022 grams . DEPTH TO WHICH THE METEORITE PENETRATED It is extremely ...
Page 125
... miles from the border while the grooves are still farther away . If we select a typical splash crater we find it to be 40-60 miles long , 10 miles broad , and perhaps one - half mile deep . The equivalent volume of rock has thus been ...
... miles from the border while the grooves are still farther away . If we select a typical splash crater we find it to be 40-60 miles long , 10 miles broad , and perhaps one - half mile deep . The equivalent volume of rock has thus been ...
Page 417
... miles ) , in Brazil and Ar- gentina ( 300,000 square miles ) , and in the Dekkan of India ( 200,000 square miles ) . It is quite common on the Earth to have , at points along the fissure , volcanoes , as in the 500 - mile - long string ...
... miles ) , in Brazil and Ar- gentina ( 300,000 square miles ) , and in the Dekkan of India ( 200,000 square miles ) . It is quite common on the Earth to have , at points along the fissure , volcanoes , as in the 500 - mile - long string ...
Contents
Frontispiece Plate 1 The Moon | 9 |
The Moon Wm W Payne | 16 |
Concerted Observation of the Aurora M A Veeder | 22 |
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altitude American angle appears asteroids Astronomical Society ataxite atmosphere August brighter brightness catalogs celestial colour comet Copernican Copernicus Cygni December determined diameter distance Earth eclipse Ephemeris equinox error estimates explosion eyepiece fall February feet fireball given Goodsell Observatory Greenwich Harlow Shapley Harvard Harvard College Observatory January Jupiter latitude light curve longitude lunar magnitude March Mare Imbrium Mars mass mathematics maximum meteorite method miles Moon Moon's motion navigation nebulae Notes Nova object observations obtained occultation orbit OTERMA parallax path period photographic planet plates Pleione POPULAR ASTRONOMY position present probably Professor proper motions reports rotation Saturn SCRIPTA MATHEMATICA seen siderites solar spectral spectral type spectroscopic sphere SS Cygni stellar surface telescope theory tion Tucson University Variable Star velocity Venus visible visual visual magnitude volume