Popular Astronomy, Volume 56Goodsell Observatory of Carleton College, 1948 |
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Page 240
... craters . If such a meteor should reach a truly igneous mass it would not make a crater . A geologist knows the dif- ference between such hard non - yielding crystalline and sedimentary rocks , and he would expect that a meteor hitting ...
... craters . If such a meteor should reach a truly igneous mass it would not make a crater . A geologist knows the dif- ference between such hard non - yielding crystalline and sedimentary rocks , and he would expect that a meteor hitting ...
Page 456
... crater rings to " dishcraters , " then to caldera - craters and finally to grabencraters and graben- the latter two types are found only in the lunarite areas , where the crust was thickest . Many typical craters of all classes are ...
... crater rings to " dishcraters , " then to caldera - craters and finally to grabencraters and graben- the latter two types are found only in the lunarite areas , where the crust was thickest . Many typical craters of all classes are ...
Page 514
craters of all sizes and that they are all circular . Allowance must be made , of course , for the seeming ellipticity of craters towards the edges of the photographs which are viewed at an angle due to the spherical surface of the moon ...
craters of all sizes and that they are all circular . Allowance must be made , of course , for the seeming ellipticity of craters towards the edges of the photographs which are viewed at an angle due to the spherical surface of the moon ...
Contents
FEBRUARY 1948 | 144 |
The Planets in March 1948 Raymond H Wilson Jr 36 97 | 176 |
THE PLANETARY THEORY OF NEWTON A PANNEKOEK | 177 |
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achondrites American angle Anyzeski appear asteroids Astronomical Society ataxites atmosphere bodies brightness California century color comet computation craters curve cycle degrees diameter distance Dollond early earth eccentricity eclipse ephemeris fall fireball force Furnas County gravity Greenwich hence Institute of Meteoritics Joel Stebbins July Jupiter Laplace latitude light magnitude Mars mass mathematical maxima maximum means meeting Mercury meteorite falls meteoritic populations Meteoritical Society meteors method Miss moon motion Mount Wilson Observatory nebula Newton Notes nova observations OCCULTATIONS VISIBLE occur octahedrites orbit Pallasite Palomar paper parallax perihelion period phenomena photographic Planetarium planetary planets POPULAR ASTRONOMY precessional present probably Professor radiant record regions reports samples Saturn shadow bands solar spectrum spots Stebbins stellar sunspot surface telescope temperature theory tion University Variable Star variation velocity Venus VISIBLE IN LONGITUDE Washburn Observatory Yerkes Observatory