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Contents
P76 INDEX TO ILLUSTRATIONS | 48 |
Astrolabes Photographs of 159 160 161 | 91 |
e Orbit of 464 | 178 |
8 other sections not shown
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Common terms and phrases
American appear Association Astronomical atmosphere average bright California changes close comets complete course crater curves determined direction discussion distance early earth fact fall field Figure give given globular clusters Harvard important increase indicated Institute interest July June Jupiter known later latitude length less light longitude magnitude March mass matter maximum mean measured meeting meteor meteorites method miles mirror month moon motion moving nature nebulae Notes novae object observations Observatory obtained occur orbit origin parallax period photographic planets plates position possible present probably problem published recent record reference region relative scientific seen Society solar space stars Table taken telescope theory tion University variable Variable Star visible