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Planet | Human

Horizon, formerly known as Proxima Centauri b, is a planet orbiting the star of Proxima Centauri in the Alpha Centauri system. It is notable for being the first established and successful extrasolar colony of Humanity.  

Table of Contents

  1. Description
  2. Notable Locations
  3. History
    1. Discovery
    2. First Exploration
  4. Geography
  5. Natural Resources
  6. Flora & Fauna


Horizon, or Proxima Centauri b, is a planet orbiting the star of Proxima Centauri. It is located in the Alpha Centauri system, which is notable for being not only a triple-star system, but also the closest star system to Earth.  

Notable Locations

  • Vista: The capital city of the planet, named after UNNS Vista. The city is highly populated and is an economic powerhouse. It is also highly popular with tourists.



Whilst the Alpha Centauri system was first discovered as far back as the 19th century, it would not be until 1915 that Proxima Centauri was discovered, and furthermore 2016 until Proxima Centauri b was officially announced with suspected habitability. The suspected habitability would continue to play on the minds of Humanity for centuries, prompting many academic papers and even fictional works exploring the planet's true habitable nature.  

First Exploration

In the onset of the 2300s, Humanity managed to develop a subspace drive that would allow them to finally break free from the confines of the Sol System and explore the known universe. Whilst construction of a vessel capable of mounting this drive, the Pathfinder-class, was under way, plans were drawn up to launch an expedition to the planet due to it being the closest suspected habitable planet to Earth.   When the first Pathfinder-class vessel was completed, the UNNS Horizon, it was immediately sent on it's mission to the planet to assess it's viability for colonisation. After a perilous journey, the ship eventually arrived at the planet, and nigh-on crash landed due to it's damaged state. The planet was fortunately habitable, and so the crew were able to survive until their rescue. In the meantime, they transformed the Horizon into a makeshift survival shelter, and unexpectedly laid the foundations for a former colony. In honour of this mission, the planet was given the name Horizon.  


In the years following the success of the Horizon mission, a full-scale effort was placed into colonising the planet. The UNNS Vista ferried much in the way of colonists, supplies, machinery, and other technology to the planet to aid in the creation of the fledgling colony.   In time, Horizon would grow to become a bustling colony, and a beacon of human interstellar expansion. The first city on the planet, named Vista, would go on to become a highly populated economic powerhouse, extremely popular with tourists.   For a long time, the planet was considered to the 'second home' on Humanity amongst the stars, only being usurped much later by larger and more connected planets.


Horizon once featured highly rocky terrain, however it was capable of supporting life, and thus had bodies of fresh water. Upon colonisation, Humanity was able to terraform the planet to be even further hospitable, creating a much more Earth-like environment.   In modern times, Horizon's entire surface has been terraformed. The planet now enjoys a variety of different biomes such as plains, tundras, and deserts; and a variety of different terrains such as flat plains, rolling hills, and mountains. A huge number of natural lakes were present on the planet which have been preserved through the terraforming process, all acting as popular tourist attractions.   The mountains in particular are also highly popular with tourists, and a number of mountain ranges can be seen around the city of Vista.

Flora & Fauna

Horizon features a similar range of flora and fauna to Earth, albeit completely different species stemming from separate evolution. Since colonisation, Humanity has introduced flora and fauna native to Earth, often successfully, though on occasion ending in ecological disaster.

Natural Resources

Horizon is very Earth-like in its resources, providing a similar range to Earth. Unlike Earth, however, tritanium and quadranium can be found on the planet.


Planet Information

Alternative Name(s)
Proxima Centauri b
Location under
Alpha Centauri System
Owning Organization
United Nations

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