Earth (Earth-2915)

"Fight for her."

- Bulletin board poster of Earth

Earth, also known as Sol III, known in the forerunner era as "Erde-Tyrene" is the third planet and one of four terrestrial worlds of the Sol system. It is the homeworld of the human species. It is the current capital world of the Unified Earth Government and Union of Progressive Peoples, and home to the headquarters of the UNSC.

With a population of around ten billion, Earth was the most populated planet in human territory prior to the Covenant invasion. Despite being dramatically reduced during the Covenant attack in 2552 due to casualties inflicted by the Covenant, the population had risen to three billion by the end of 2557.

Source

 * https://www.halopedia.org/Earth