Neptune Ultraviolet Observations
Voyager ultraviolet measurements probe Neptune's upper atmosphere and its interaction with the solar environment.
Historical biography archive · Updated 2026-11-03
Andrew L. Broadfoot Biography and Timeline
Follow Andrew L. Broadfoot through 2 dated historical records for United States of America.
Andrew L. Broadfoot, historical timeline
A chronological timeline drawn from matching World History Database records.
2Distinct records
1 of 1Page
1989–1989Years on this page
1989
Triton Nitrogen Atmosphere
Ultraviolet observations help establish that Triton possesses a thin nitrogen-rich atmosphere.
Records, sources and methodology
These dates and descriptions come from the historical_events database. Exact duplicate records have been collapsed. Names are grouped by the country, Name 2 and Name 1 fields; records with missing Name 2 cannot be reliably assigned to an individual biography. Check the underlying sources before formal citation.