Popular Astronomy, Volume 56Goodsell Observatory of Carleton College, 1948 |
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Page 242
... Mars is from 50 to 60 miles thick . At the surface of Mars its atmospheric pressure may approach one third of that of the earth's atmosphere . The murkiness of the Martian atmos- phere is probably due to colloidal dust particles and ...
... Mars is from 50 to 60 miles thick . At the surface of Mars its atmospheric pressure may approach one third of that of the earth's atmosphere . The murkiness of the Martian atmos- phere is probably due to colloidal dust particles and ...
Page 244
... Mars we have the much smaller planet , Mars , with a very light atmosphere . Had there been a greater endowment of water there than is now appar- ent from our observations it could be there only as glacial ice . If this is present it ...
... Mars we have the much smaller planet , Mars , with a very light atmosphere . Had there been a greater endowment of water there than is now appar- ent from our observations it could be there only as glacial ice . If this is present it ...
Page 246
... Mars . Were there any intelligent beings on Mars they could not be aware of our existence . When Mars is close to us at opposition , and blazes red in our evening sky opposite the setting sun , the earth is at " inferior conjunction ...
... Mars . Were there any intelligent beings on Mars they could not be aware of our existence . When Mars is close to us at opposition , and blazes red in our evening sky opposite the setting sun , the earth is at " inferior conjunction ...
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