Robert A. Freitas coined the Term seta in the 1980s. On the basis that the Earth-Moon or Sun-Earth libration orbits might constitute convenient parking places for automated extraterrestrial probes, unsuccessful searches were conducted by Freitas and Valdes. Dysonian SETI In a 1960 paper, Freeman Dyson proposed the idea of a Dyson sphere, a type of extraterrestrial artifact able to be searched for and studied at interstellar distances. Following that paper, several searches have been conducted. In a 2005 paper, Luc Arnold proposed a means of detecting smaller, though still mega-scale, artifacts from their distinctive transit light curve signature. (see Astroengineering). Criticism Xenoarchaeology is referred to as 'pseudoarcheology' by some circles of archaeologists and critics of the concept of 'ancient aliens'. The idea of xenoarchaeology has been popularized in non-academic television programs such as the History Channel series Ancient Aliens, which uses a strategy known as 'fire-hosing' to co-mingle fact with fiction in order to spread theories of an alternate past that normalizes white supremacist, nativist, imperialist, settler-colonial, and Christian perspectives. Researchers and scholars featured as guests on the show often profess to be a part of an oppressed minority of academics that 'big archaeology' refuses to acknowledge or attempts to disenfranchise. This claim of being a maverick or a rogue absolves these individuals of their frequent lack of credentials to legitimately comment on the field of archaeology. Xenoarchaeology prioritizes well-known, monumental archaeological structures, a criticism of early archaeology the field of xenoarchaeology perpetuates. In claiming these monuments could have only been constructed with extraterrestrial intervention, xenoarchaeologists or alien astronaut theorists are also claiming that the often non-white Indigenous people in the regions in which these monuments appear could not have built them on their own. Additionally, these alien saviors are often portrayed as light-skinned or Aryan in complexion, as prominent alien astronaut theorist Erich von Däniken claims in his work Chariots of the Gods, which has been considered a cornerstone in the field of xenoarchaeology for the last five decades. This re-structuring of the past undercuts the achievements and contributions of Indigenous people to human history that they have had and continue to have. Xenoarchaeology has been used in the United States to justify the genocide of Indigenous peoples on this continent. "The notion that the ancestors of Native Americans were not the first or only people on the continent has great popularity among white nationalists, who see it as