Keywords: Riccioli-Venus.jpg en The crescent phases of Venus and detailed representations of its appearance as seen through a telescope from Riccioli's 1651 New Almagest 2011-09-26 Almagest Novum/Astronomia Reformata of 1651/1665 G B Riccioli PD-Art Uploaded with UploadWizard Giovanni Riccioli Venus planet |