The Earth Space Security Zone is an international administrative zone controlled by the United Nations which ensures the security of the planet Earth. With the rise of corporate space vessels, various nations' military vessels, science research vessels, civilian spaceliners, civilian cruise vessels and other craft, an international authority securing Earth's space zone from illegal entries, illegal activities including military incidents, illegal weapons trading, narcotics trade and other new forms of crime was established. The Earth Space Security Zone consists of a series of Earth orbiting satellites, nicknamed "the Grid", which monitors space objects nearing Earth including vessels, space debris and asteroids or meteors.