Labels:text | paper | font | document OCR: All pictures are copyright material and are strictly for private use by the purchaser only. They may not be distributed to any other party. Unauthorized copying, hiring, lending, public performance, and broadcasting of these pictures is prohibited and an infringement of copyright. The publisher would like to thank the following for their kind permission to reproduce the photographs: AIP EMILIO SEGRÉ VISUAL ARCHIVES Fred Whipple. George Gamow (Bainbridge Collection) Jan Oort (Photo by Ron Doel). Edwin Hubble (Hale Observatories). Ejnar Hertzsprung (Dorritt Hoffleit, Yale University Observatory). Henry Norris Russell (Margaret Russell Edmonson Collection). Georges Lemaître (Photo by Dorothy Davis Locanthi). Robert Goddard (NASA). Cecilia Payne-Gaposchkin (Physics Today Collection). Henrietta ...
