The young astronomer; or, The facts developed by modern astronomy, collected for the use of schools and the general reader (1847)
Abbott, John S. C. (John Stevens Cabot), 1805-1877 · New York, J.C. Riker [etc.] · leaf 66
dark beltssupposed to be ? Are these belts changeable or unchangeable I Howlong are any of them ? JUPITER. 61 more than one hundred and thirty thousand in length.These zones or belts are almost invariably parallelWith the equator of the planet, and though sometimesfor several months they exhibit no… … In what direction do these belts run ? How long do they ever re-main permanent ? How rapidly do they ever change ? 62 THE YOUNG ASTRONOMER. Jupiter has four moons. They have received thenames, in the order of their distance from the planet,of Hebe, Ganymede, Themis and Metis. These namesare,…
Astronomy
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