Earth

Earth is the third planet in the Sol system and one of the first Alliance member planets. In 2050 the various nations of Earth came together under the leadership of the UN. In 2063 human scientists began terraforming Mars using breakthrough science. In 2123 the Survival War began when the Somakians invaded Earth. Two years later the Tarvarkians and Gylarians helped humans repel the Somakians, and they gave humans SL drives. Earth is the capital planet of the Alliance, and the capital city on Earth is London. In the early 22nd century the stars became available to humanity, leading to a mass exodus of potential colonisers and settlers bound for other star systems. This event led to Earth becoming massively de-populated, and for the first time in a century Earth's population dropped below 7 billion. However the population continued to steadily increase throughout the centuries as well, and as of the mid 25th century there are approximately 40 billion inhabitants on Earth. Buckingham Palace in London has been renamed the Secretary's Palace and has been home to the United Nations Secretary-General since the mid 21st century.