Popular Astronomy, Volume 56

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