Media type: E-Article Title: European Southern Observatory Contributor: Dickson, David imprint: American Association for the Advancement of Science (AAAS), 1987 Published in: Science Language: English DOI: 10.1126/science.238.4834.1648.e ISSN: 0036-8075; 1095-9203 Keywords: Multidisciplinary Origination: Footnote: