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08/03/1979 Io volcanoes

The Voyager 1 imaging scientist Linda Morabito discovered volcanic activity on Io, a moon of Jupiter, the date of discovery sometimes also cited as March 9. She detected a 270 kilometers long cloud of volcanic origin. It was the first proof of active extra-terrestrial volcanoes. According to the current state of knowledge, Io hosts around 400 volcanoes.


  • Essentials 

  • Volcanology of Io 

  • Discovery 

  • Heat source 

  • Composition 

  • Eruption styles 

  • Plumes