Astronomical Unit1663
Gregory proposes using observations of a planetary transit from widely separated locations to determine the scale of the Solar System.
Historical person
James Gregory Biography
Historical biography and chronological timeline for James Gregory, based on 1 World History Database records associated with Great Britain.
1 records1663–16631 events0 places
Chronological biography
1663
Record provenance
This biography is assembled from World History Database records filtered by country and personal-name fields. Exact duplicate display records are removed. The database is an index rather than a complete narrative biography; formal research should verify entries against relevant primary or specialist sources.