March 1979
Io Sulfur-Rich Surface
Voyager colour imagery reveals extensive sulfur-rich deposits and varied volcanic terrain across Io.
Historical place archive
Browse historical events and people recorded at Io in United States of America. The records below are rendered directly from the World History Database into this page's initial HTML.
Voyager colour imagery reveals extensive sulfur-rich deposits and varied volcanic terrain across Io.
Analysis of Voyager 1 imagery identifies the towering volcanic plume associated with Pele on Io.
Identifies a volcanic plume above Io in Voyager 1 imagery, revealing active volcanism beyond Earth.
Galileo passes roughly 611 kilometres above Io, beginning exceptionally close extended-mission studies of the volcanic moon.
Galileo passes close to Io to investigate active volcanism and the moon's interaction with Jupiter.
Galileo flies about 198 kilometres above Io, obtaining close measurements of its active volcanic environment.
A close Galileo flyby examines Io's rapidly changing volcanic surface at high resolution.
Galileo passes about 184 kilometres above Io during a late-mission encounter focused on volcanic and plasma activity.
Galileo completes its final Io flyby at an altitude of roughly 102 kilometres.
New Horizons observes giant volcanic plumes and changing surface features on Io.
New Horizons records a giant plume from Io's Tvashtar volcano and traces its changing structure.
Juno begins very close flybys of volcanic Io.
Juno passes close to Io, obtaining detailed views and measurements of its volcanic surface.
Juno completes a second close Io encounter, extending measurements of volcanism and tidal heating.
Juno flyby data indicate Io's volcanic heat is not concentrated in a single shallow global magma ocean.
Juno data provide the first measurements of temperatures beneath Io's surface, refining models of tidal heating.
Provenance
These entries are generated from stored World History Database records whose country and place fields match United States of America and Io. Names, dates, event labels and descriptions are reviewed and normalised as the database develops. Historical place names may not match modern administrative boundaries.
This database is a research index. For formal scholarly citation, verify individual claims against appropriate primary, archival, academic or specialist sources.