The pages listed below form part of a series of Leaflets distributed by the Royal Greenwich Observatory (RGO).
Copyright to these Leaflets remains with the RGO and permission to use them in any manner other than for private use or for inclusion in school project work is forbidden without expresss permission.
Downloading of these Leaflets for educational use by private individuals or schools is encouraged, and permission is not needed for such purposes.
Leaflets published by ARVAL (with permission of RGO):
Royal Greenwich Observatory Webmaster:
Last modified: Sat Jan 11 14:36:44 1997
Link to the original Leaflets at the:
Royal Observatory Greenwich
Updated: June 30 '04
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