Io

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There is more information available on this subject at Io on the English Wikipedia.
A moon of Jupiter, still rife with the energy of the Traveler.
Io
Io.png
Astrographical

Star, position:

Sol, Jupiter

Physical

Diameter:

3642.58921

Gravity:

0.183 g

Length of day:

1.77 (synchronous)

Atmosphere:

Sulfur dioxide (SO2)
Sulfur monoxide (SO)
Sodium chloride (NaCl)[1] (pre-Traveler)

Surface temperature:

-202°F

Societal

Demonym:

Ionian

Species:

Vex
Cabal
Taken
Pyramids

Government:

Red Legion, Vex, Taken, and Black Fleet 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. Io was one of four destinations that was Taken by the Witness at the end of Season of Arrivals.

Overview[edit]

In the final days of the Golden Age the Traveler was in the midst of terraforming Io when it detected the Darkness approaching; The Traveler began to move to Earth in a defensive posture, leaving Io half-completed and flooded with the Traveler's formatted energies.[2] 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. The moon is still charged with the Traveler's pure energy, which lingers in the atmosphere of the moon, visible from orbit. [2] Echo Mesa, a mountain on Io,[3] has become a popular pilgrimage site for Guardians.[2] The Mesa overlooks a crater where the Traveler left behind a mysterious maze-like structure.

The terrain of Io was covered in fossils, many of which closely resemble enlarged versions of ancient Earth organisms such as trilobites, ammonites and dinosaurs. It is unknown whether these fossils were a by-product of the Traveler's paracausal terraforming, or whether they pointed to some unrecorded history of transplantation between Earth and a more habitable Io in the distant past.

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.[4]

History[edit]

The Cabal Terrabase Charon featured banners and emblems of the Sand Eaters Legion, indicating that the Cabal may have had a presence on Io long before the Red War.

During the Red War, Io became a warzone for Guardian, Red Legion, Vex and Taken forces. When the Red Legion arrived in the Sol System they set up at Terrabase Charon, on Echo Mesa and were met with resistance from the Vex and Taken forces there. Io was the final place that the Traveler influenced with Light in the Sol System, and as such is sacred ground to Warlocks. During the conflict, The Guardian traveled to Io on Zavala's orders to find Ikora. After locating the Warlock Vanguard leader, Ikora sent 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 met Asher Mir, an Awoken scientist who was fixated on the Vex, along with their activities on the planet.

A Vex structure known as the Pyramidion was found there, which was fought over by the Taken in another attempt to infect the Vex network like Oryx had with the Vault of Glass. The Pyramidion was described by Asher Mir and Ikora as a "conversion engine", responsible for converting Io into a Vex Machine World and was believed to be one of many entry points into Vex space, where one of their Axis Minds performed experiments on captured Guardians. The Pyramidion was only accessible during the Curse of Osiris story mission, Deep Storage and in the strike, The Pyramidion.

A hidden Warmind vault, JYS-2, was buried beneath Io's surface and inadvertently uncovered by one of the Cabal's drills. An unidentified active AI - implied through various details to be Rasputin - was still using the facility. Instead, it communicated via pre-Golden Age music and philosophical quotations, which proved to intrigue the Vex. This was observed in the Adventure Arecibo.

Following the destruction of The Almighty, a Pyramid touched down on the moon, disabling Rasputin and positioning itself above the Cradle, where a Tree of Silver Wings lay inside. It is unknown if the tree was always there or if the Pyramid spawned it.

Several months after the arrival of the Black Fleet, they caused the moon along with Titan, Mercury, and Mars to mysteriously disappear, just as the Traveler healed itself. As of now Io still remains missing and it is unknown if it'll ever be recovered.

Locations[edit]

Trivia[edit]

  • When a player looked above the Pyramidion, it was possible to see Europa up above.
  • Io and Mercury are the only two locations The Witness took that have not been returned.

Gallery[edit]

List of appearances[edit]

References[edit]