Jovionoid
A Jovionoid is a kind of lifeform that uses Gas Giants as its native world type (homeworld) rather than the more common terrestrials worlds or "rock balls" used by the majority of sophont species.
- Jovionoids are considered unconventional life even when they have more conventional biochemistries.
Library Data Referral Tree
Please refer to the following AAB Library Data for more information:
Life Sciences:
Biotechnology
Description (Specifications)
In practice, the vast majority of known Jovionoids are flyers or floaters and breathe hydrogen with alternate biochemistries compared to the conventional carbon-water based biochemistries of most conventional sophont species.
- Jovionoid civilizations are sometimes called "Hydrogen Societies."
Image Repository
- Two Jgd-ll-jagd, a long-lived hydrogen species.

- The Domination, an aggressive, threatening race of hydrogen species.

Conventional Life vs. Unconventional Life
While Jovionoids are by default considered unconventional life by most exobiologists, it is very possible for conventional lifeforms to develop very similar biologies, physiologies, and appearances to jovionoids and develop on terrestrial "rock ball" worlds. Most such terrestrial creatures or sophonts are floaters. This is considered convergent evolution by many exobiologists.
Specific Species Exemplars
Notable Jovionoid Species: Charted Space knows only a handful of Jovionoid species:
| Selected Silicoid Species Exemplars | ||||
|---|---|---|---|---|
| Specie/s | Sophonce | Remarks | ||
| Blimps | Sophont | No information yet available. | ||
| Calipha | Proto-Sophont | No information yet available. | ||
| Domination | Sophont | No information yet available. | ||
| Jgd-ll-jagd | Sophont | No information yet available. | ||
| Sheol | Sophont & Creature | No information yet available. | ||
| Zakai | Creature | No information yet available. | ||
History & Background (Dossier)
While Jovionoid Life is still considered rare within Charted Space, many Imperial scientists feel that this is because the environmental and biological needs of Jovionoid species are very different than those of conventional terrestrial life. So the two have had little opportunity to interact fully, and in many cases, are not searching for each other. It is widely thought that a comprehensive program to search for Hydrogen-breathing Jovionoid life would turn up many other such species, and that while many of them would be primitive pre-spacefaring civilizations, the existing starfaring Jovionoids have already proven that such life is viable.
Jovionoids Outside of Charted Space
There are numerous reports that jovionoid life is much more common outside of Charted Space. The general consensus of the greater scientific community is that this proposition is highly likely. Some call these hypothetical jovionoid civilizations the Hydrogen Societies.
Worlds & Sectors (Astrography)
Jovionoids tend to be prolific species and experience much less competition for worlds than conventional, terrestrial life.
World Listing: 1105
The following systems, worlds, and gas giants are known places of residence for jovionoid sophonts:
| startbacknext(16 listed) |
References & Contributors (Sources)
| This article is missing content for one or more detailed sections. Additional details are required to complete the article. You can help the Traveller Wiki by expanding it. |
- Periodical: Journal of the Travellers Aid Society No. 17 by Author & Contributor: Phil Masters
- Jae Campbell. "Library Data: Zeda." Signal-GK 11 (1995): 90-91. via HIWG
- Leighton Piper. "Port of Call: Reshumirak." Signal-GK 13 (1997): 3-5.
- David L. Pulver. Alien Races 1 (Steve Jackson Games, 1998), TBD.
- Steve Jackson, Loren Wiseman. Alien Races 4 (Steve Jackson Games, 2001), TBD.
- Jae Campbell. Encyclopaedia Dagudashaag (Signal-GK, 2017), 92-94.
- External Link: Downport CARI by Author & Contributor: Paul J. Drye
- Traveller Wiki Editorial Team
- Author & Contributor: Lord (Marquis) and Master of Sophontology Maksim-Smelchak of the Ministry of Science