Earth Alliance (Babylon 5)

The Earth Alliance is the name of a fictional alliance of the nations of Earth and off-world colonies in the television series Babylon 5. The transition of Earth government from a democratic, elected government to an authoritarian, militaristic one and back to a democracy again is a major theme of the series. It is considered one of the five major galactic diplomatic/military powers (Earth Alliance, Narn Regime, Minbari Federation, Centauri Republic and the Vorlon Empire) in the Babylon 5 pilot episode movie "The Gathering". They have separate seats at the head of the council chambers on the Babylon 5 station. The League of Non-Aligned Worlds sit in the general assembly section. The Vorlons departed from the galaxy along with the Shadows and the last few remaining First Ones, leaving the galaxy to the younger races.

The Earth Alliance is one of the galaxy's major powers, arguably the strongest of the younger races (the other being the Minbari federation) in the Babylon 5 universe. Besides Earth, the Alliance includes 23 colonies; some of the more prominent colonies are on Mars, Orion 7, and Proxima 3. One reason for humanity's rapid settlement of the galaxy is the use of long-range Explorer class starships that can build jumpgates; the jumpgates allow colony ships and supply vessels to easily move from one Earth colony to the next.

Aside from Babylon 5 itself, the most common human space stations mentioned in the B5 universe are wheel-shaped, Stanford torus design space stations. These stations rotate to produce pseudogravity. They appear to have a standardized design with few internal variations. The oft-mentioned "Io Station" that maintained the principal jumpgate into and out of Earth's Solar System is an example of one of these. Garibaldi also mentions one of these stations is "near Mars" in the episode TKO, one is seen orbiting Earth on one occasion and another was visibly destroyed when the Minbari followed the Earth ships back to their base at the start of the Earth-Minbari war.

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