Deep Dive
Here you`ll find further insights into the worldbuilding, technology, characters, and universe of Horizon - Journey to Onyx.
This site will be expanded over time.

This original sketch formed the basis for the final design of the Horizon. The overall shape, structure and characteristic Gravity-Drive ring were developed from this first concept.
Colony Ship Horizon
Year Built:
2119, Solana 3-1 Orbital Shipyard
Affiliation:
United Earth Space Exploration Program (UESEP)
Designation:
UESEP-HCS-01
Dimensions:
Length: 2,500 m
Width: 1,000 m
Height: 750 m
Deck Count:
50 decks of varying heights
Internal Volume:
Approx. 1.0 cubic kilometer
Mass:
Approx. 45 million metric tons fully loaded
Propulsion:
Gravity Drive, Field-Resonance Gravitational Drive FGA2, supported by plasma-ring stabilizers and vector-plasma thrusters
Power Supply:
Primarily powered through the Gravity Drive, supplemented by two quantum-fusion cores. Each core is capable of a peak output of up to 1 × 10¹³ J/s, while normal operating output remains significantly lower.
Hull Structure:
Titanium nanocomposite structure
Protection Systems:
The Horizon uses a multi-layered protection concept. An energetic shielding system reduces exposure to charged particles and cosmic radiation. In emergency situations, reactor output can be redirected to temporarily boost shield strength to peak levels. The titanium nanocomposite hull provides additional protection against micrometeorites and smaller objects. Multiple protective layers integrated into the hull serve as a further line of defense for the crew.
Deck Layout:
The Horizon consists of 50 decks, each assigned to specific operational functions:
Decks 1–5:
Bridge, navigation, command center, security section
Decks 6–15:
Life-support systems, cryogenic modules, hydroponic gardens, food production
Decks 16–30:
Residential areas, including cabins, crew quarters and communal spaces
Decks 31–35:
Research facilities, medical stations and laboratories
Decks 36–45:
Engineering and machinery sections, maintenance areas and reactor-core access
Decks 46–50:
Evacuation sections, hangars and emergency areas
Note: Decks 40–50 are primary structural decks of the ship. These sections form part of the Horizon’s reinforced internal framework and use a strengthened structural design to withstand the stresses generated by the Gravity Drive, reactor systems and overall hull load.
Onyx - PE-17-3-HRZN

Onyx is a habitable planet located in the Proxima Centauri system. It has a breathable atmosphere, vast oceans, a generally cooler climate than Earth and is accompanied by three moons.
The planet was selected as the destination of the Horizon mission with the goal of establishing a new colony and building a society based on cooperation between humans and machines.
Much of Onyx’s flora is crystalline in nature, and parts of its fauna show similar characteristics. When plants and animals decay, they leave behind a fine crystalline dust that can be found across large parts of the planet.
Colonization of Onyx
Colonization begins gradually after the arrival of the Horizon. Construction teams are awakened from cryosleep first, followed by the adult colonists and, later, the children.
Large industrial 3D printers are used to produce components for the first structures. The initial settlement is highly technological, but deliberately designed to remain human and welcoming. Humans and Eidolons work together during the construction process.
Exploration missions are launched into the surrounding regions, while the colony continues to grow. One of the first major celebrations marks the reunion with the children and includes the first fireworks ever seen on Onyx.