RT @hist_astro: “Copernicus observing in Rome an eclipse of the moon” by J. Presno, 19thc., Priv. Coll. @BridgemanImages http://t.co/Kzi1oZXYYN
RT @hist_astro: “Copernicus observing in Rome an eclipse of the moon” by J. Presno, 19thc., Priv. Coll. @BridgemanImages http://t.co/Kzi1oZXYYN