Meetings & Meeting Reports Astronomy + See all authors and affiliations Science 12 Jul 1963:Vol. 141, Issue 3576, pp. 178-181DOI: 10.1126/science.141.3576.178 A. B. MeinelFind this author on Google Scholar Find this author on PubMed Search for this author on this site Article Info & Metrics eLetters PDF This is a PDF-only article. The first page of the PDF of this article appears below.