The Nation of Celestial Space (also known as Celestia) was a micronation created by Evergreen Park, Illinois, resident James Thomas Mangan. Celestia comprised the entirety of "outer space", which Mangan laid claim to on behalf of humanity to ensure that no one country might establish a political hegemony there. As "Founder and First Representative", he registered this acquisition with the Recorder of Deeds and Titles of Cook County on January 1, 1949. At its foundation Celestia claimed to have 19 members, among them Mangan's daughter Ruth; a decade later a booklet published by the group claimed that membership had grown to 19,057.