Stuff To Blow Your Mind

From the Vault: The Burning Mountains of Io, Part 1

Jan 31, 2026
A vivid tour of Io's extreme volcanism and the Juno imagery that renewed scientific interest. Vivid descriptions of its eerie, colorful landscapes and towering mountains. Stories about Loki Patera, magma lakes, and the planet-scale fire and ice contrast. A dive into the mythological origins behind Io's name and ancient tales tied to her transformations.
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INSIGHT

Striking New Portrait Of Io

  • Juno's December 30, 2023 image shows Io's northern hemisphere as a dramatic, multicolored landscape of plains, craters, and sharp mountains.
  • Robert Lamb and Joe McCormick describe it as eerie, hellish, and vividly evocative, inspiring curiosity to explore Io further.
INSIGHT

Io's Volcanic Extremes Explained

  • Io is the innermost Galilean moon and is slightly larger than Earth's Moon.
  • It is the most volcanically active body in the solar system with hundreds of active volcanoes and immense tidal heating.
ANECDOTE

Voyager's Accidental Volcano Discovery

  • Carl Sagan's recounting of Linda Morabito spotting a volcanic plume on Voyager images dramatizes unexpected discovery.
  • The plume revealed the first confirmed active volcano beyond Earth and reshaped our view of Io's fresh, changing surface.
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