Hostname: page-component-857557d7f7-9f75d Total loading time: 0 Render date: 2025-12-05T02:14:57.024Z Has data issue: false hasContentIssue false

Concluding Remarks

Published online by Cambridge University Press:  08 February 2017

J. C. Pecker*
Affiliation:
Observatoire de Meudon, France

Abstract

Image of the first page of this content. For PDF version, please use the ‘Save PDF’ preceeding this image.'