User blog comment:KrusH HsurK/Earth, Capital of humanity, but lacking of its own capital?/@comment-118213-20120508202257

As PhoenixBlue said, Arcturus Station is the capital of the Systems Alliance. But the dis-unified nature of Earth means it's almost impossible for them to agree on a capital city - unless it's a compromise choice, such as Brussels is with the European Union.

Traditionally speaking, If I were to place a capital city on Earth I would choose London - it's the centre of Earth time, and it's located in Northern Hemisphere, on a map. The fact that I'm a London'er means i'm not totally unbias, I just feel it makes more sense than cities such as New York or Tokyo, for example.