Io

From DoomWiki.org

Galileo spacecraft true-color image of Io.

Io (/ˈaɪ.oʊ/) is the innermost and third-largest of the four Galilean moons of the planet Jupiter. Slightly larger than the Moon, Io is the fourth-largest moon in the Solar System, has the highest density of all of them, and has the lowest amount of water (by atomic ratio) of any known astronomical object in the Solar System. It was discovered in 1610 by Galileo Galilei and was named after the mythological character Io.

Io is remarkable for its extreme volcanism, which is responsible for many of its unique features. Its volcanic plumes and lava flows produce large surface changes and paint the surface in various subtle shades of yellow, red, white, black, and green, largely due to allotropes and compounds of sulfur.

In mods[edit]

Some notable user-made modifications also take place on or feature Io:

TNT: Evilution[edit]

While its not specifically stated in the manual or in-game, many fans consider Io to be the setting of TNT: Evilution,[1] one of the two episodes of Final Doom created by TeamTNT as part of the Doom series. The theory that the game is set on Io is based on the fact that the manual for Final Doom mentions the game being set on "one of the moons of Jupiter",[2] and Io being the most geologically active of the Galilean moons, and in fact the most geologically active object in the entire Solar System, although the developers would have not necessarily known this back when the game was made in 1996.

According to the manual, the UAC, under the strict supervision of the United States government, built a base on one of the moons of Jupiter dedicated to continuing the UAC's prior research into teleportation. It was hoped that the increased distance from Earth, relative to Mars, would help protect humanity in the event of another catastrophe. Once gate research resumed, the demons' attentions were drawn to the base and they repeatedly attacked it, but were successfully driven back several times by a detachment of marines from the United States Space Marine Corps.

Ultimately, however, a strange Hellish spaceship appeared in the orbit of Io and monsters poured down onto the moon from its skies, overwhelming the base completely. The Doomguy happened to be on the installation at the time, and was out for a walk when the invasion occurred. When he made it back, everyone else was already dead, and he took it upon himself to once again stop the invading demons.

Gallery[edit]

Sources[edit]

  • This article incorporates text from the open-content Wikipedia online encyclopedia article Io (moon).

References[edit]

  1.  (23 April 2020). "Which moon do you think TNT Evilution takes place on?". Doomworld forums. Retrieved 8 September 2024.
  2.  (31 March 2016). "Doom Manual (Final Doom), p. 1." Internet Archive. Retrieved 9 September 2024.