James Head1975
Mariner 10 data provide detailed maps of roughly forty-five percent of Mercury's surface, leaving much of the planet unseen.
United States · Science / Astronomy. Chronological records rendered directly from the World History Database.
Mariner 10 data provide detailed maps of roughly forty-five percent of Mercury's surface, leaving much of the planet unseen.
Images from MESSENGER's second Mercury flyby fill many gaps in spacecraft coverage and greatly expand the mapped surface.
This factsheet is generated from stored World History Database records matching the country, broad category, detailed category and exact Event value shown above. Duplicate display records are collapsed; database wording is otherwise preserved. Source provenance varies by record, so formal academic citation should be checked against the relevant primary source, archive or specialist historical reference.