Solar Subcluster

Solar Subcluster
Location:	Local Cluster
Star Systems:	11
Nations:	Centauri Republic; Sirius; Tau Ceti;

The Solar Subcluster is a subcluster of star systems located entirely within the Local Cluster.

It is between the Vega Cluster coreward, the Draconis Subcluster rimward, the Indian Arm spinward, and the Arcturus Subcluster coreward-by-trailward.

The subcluster includes several sovereign states, including: the Sirius Federation, United Centauri Republic, and the United Provinces of Tau Ceti.

The Solar Subcluster is principally comprised of eleven primary star systems: Alpha Centauri, Alpha Lyrae, Barnard's Star, Cygnus, Epsilon Eridani, Lalande, Procyon, Sirius, Sol, Tau Ceti, and Wolf 359.

Only four of the star systems of the Solar Subcluster are significantly populated: Alpha Centauri, Epsilon Eridani, Sirius, and Tau Ceti.

Etymology

From Late Middle English solar, from Latin sōlāris, from sōl (“sun”), from Proto-Indo-European *sóh₂wl̥ (“sun”).

Astrography

Boundaries

Solar-Vega Cluster

The boundary between the Solar Subcluster and the Vega Cluster runs roughly between Lalande-Delta Draconis.

Solar-Draconis Subcluster

The boundary between the Solar Subcluster and the Draconis Subcluster runs roughly between Alpha Lyrae-Cepheus.

Solar-Old Styx

The boundary between the Solar Subcluster and Old Styx runs roughly between Procyon-Ismarus.

Translight Strings

There are a total of 14 translight strings connecting the 11 star systems of the Solar Subcluster. There are no unstable translight strings within the Solar Subcluster.

There are two star systems in the Solar Subcluster with four or more translight strings connecting to them: Alpha Centauri and Sirius.

Interstellar Objects

Solar Quarantine Zone

Enforced by the Joint Solar Authority, the Solar Quarantine Zone is a strict, zero-tolerance, zone-of-control located around the periphery of the Sol system.

History

Early Colonization Era

The Centauri Program

Prior to the year 2018, the totality of Human history took place within the Solar Subcluster's Sol system. The exploration of the Solar Subcluster outside of the Sol system began in 2018 with the first successful "skip" across a Cosmic String by an unmanned American spacecraft. The Centuari Program was established in the following year as a joint venture between the Soviet Union, German Reich, and ATO (historic precursor to the OTO). Manned exploration began in earnest with the successful jump of the American spacecraft "Chiron" to Alpha Centauri in 2024. Humanity's first extrasolar colony, Harmony, would be established seven years later in 2031 on a planet in the Alpha Centauri system.

The Second Scinfaxi War

Evacuation of Earth

In 2153, the evacuation of Earth was declared over following the departure of the last evacuation transport from the Sol System.

The Cold War

The First Solar War

In 2208, the Federal Republic of Vega declared war on the United Centauri Republic, beginning the First Solar War. Lasting for five years, the conflict would end in an armistice in 2213 recognizing Vegan territorial gains and sovereignty.

The Second Solar War

Beginning with a Vegan invasion of the Sirius Federation in 2229, the Second Solar War resumed hostilities between the Federal Republic of Vega, its allies, and the powers of the Solar Subcluster. Despite the loss of the majority of the United Centauri Republic fleet in the Battle of Cygnus in 2231, the intervention of the German Reich in that same year brought an end to the war.

Countries and territories


Common and Formal Names	Alignment	Capital System	Classification
United Centauri Republic	African Union Solar Treaty Organization	Alpha Centauri	Great Power
Sirius Federation	African Union Solar Treaty Organization	Sirius	Regional Power
United Provinces of Tau Ceti	African Union Solar Treaty Organization	Tau Ceti	Regional Power