Io

There is more information available on this subject at Io on the English Wikipedia.

"I don't have time to explain why I don't have time to explain."
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Io
Astrographical
Star, position:	Sol, Jupiter
Physical
Diameter:	3642.58921
Gravity:	0.183 g
Length of day:	1.77 (synchronous)
Atmosphere:	Sulfer dioxide (SO2) Sulfur monoxide (SO) Sodium chloride (NaCl) (pre-Traveler)
Surface temperature:	-202°F
Societal
Demonym:	Ionian
Species:	Vex Fallen Cabal Taken
Government:	Red Legion, Vex, House of Dusk and Taken occupation

"Io was the last place visited by The Traveler, and the site of great interest to both humanity and the timeless Vex machines. The Red Legion, too, now seek to unravel the secrets and power of this place, gouging at the surface, seeking to uncover new sources of power to aid in their quest to dominate our worlds. It is up to you to protect this place, and preserve its great legacy."

— Website description

Io (also called Jupiter I) is one of the four major moons of Jupiter.

Overview

In the final days of the Golden Age the Traveler was in the midst of terraforming Io when it detected the Darkness approaching; abandoning the moon as it fled to Earth. As a result of this, the Ionian climate and geography do not support traditional agriculture, meaning that some remnant of Io's original atmospheric composition prevented the full growth of plants. Echo Mesa, a mountain on Io, has become a popular pilgrimage site for Guardians.

One of the legends of the Nine state they are some of the original Awoken transcended to mental form and live inside the Jupiter-Io flux tube.

History

Destiny 2 spoilers

During the The Red War, Io became a warzone for Guardian, Red Legion, House of Dusk, Vex and Taken forces. Io was the final place that the Traveler influenced with Light in the Solar System, and as such is sacred ground to Warlocks. During the conflict, The Guardian travels to Io on Zavala's orders to find Ikora. After locating the Warlock Vanguard leader, Ikora sends the Guardian on several missions into a Cabal research base, ultimately revealing the Red Legion's plans for the Traveler and the Light. The Cabal were mining out the remaining Light energy from the Traveler, which attracted the forces of the Taken and forced the Cabal to evacuate. During the Guardian's time on Io, they also meet Asher Mir, an Awoken scientist fixated on the Vex, along with their activities on the planet. A Vex structure known as the Pyramidion is found there, which was fought over by the Taken in another attempt to infect the Vex like Oryx had with the Vault of Glass. The exact purpose of the Pyramidion is unknown, but it is believed to be merely one of many entry points into Vex space, where one of their Axis Minds performed experiments on captured Guardians. A hidden Warmind vault was buried beneath Io's surface that was uncovered by one of the Cabal's drills. An Active AI was still using the facility but did not identify itself. Instead, it communicated via pre-Golden Age music and philosophical quotations, which proved to intrigue the Vex.

Locations

• Echo Mesa
  • Javelin-4 (Crucible Map)
  • Lost Oasis (Landing Zone)
    • Grove of Ulan-Tan (Lost Sector)
    • Spine Burrows
    • Terrabase Charon
      • The Wraith Mines
  • The Rupture (Landing Zone)
    • Aphix Conduit (Lost Sector)
    • Pyramidion
    • Sanctum of Bones (Lost Sector)
    • The Endless Gate
  • Giant's Scar (Landing Zone)
    • Excavation Site II
    • Warmind Vault JYS-2

List of appearances

• Destiny (First mentioned)
  • Age of Triumph (Mentioned only)
• Destiny 2 (First appearance)

Gallery

• 
• 

  A massive Vex structure looms in the distance.

• 

  A Guardian delves into a Vex structure deep within Io.

• 

  Concept art of what appear to be Vex ruins on Io.