The goal of the Galileo Project is to bring the search for extraterrestrial technological signatures of Extraterrestrial Technological Civilizations (ETCs) from accidental or anecdotal observations and legends to the mainstream of transparent, validated and systematic scientific research. This ground-based project is complementary to traditional SETI, in that it searches for physical objects, and not electromagnetic signals, associated with extraterrestrial technological equipment.
Irrespective of the possibility that the Galileo Project may discover additional, or even extraordinary evidence for ETCs, at a minimum the Galileo Project will gather rich data sets that may foster the discovery of — or better scientific explanations for — novel interstellar objects with anomalous properties, and for potential new natural atmospheric phenomena, or in some instances terrestrial technology explanations for many of the presently inexplicable UAP.
The ODNI (Office of the Director of National Intelligence) report, delivered to Congress on June 25, 2021, mentions many Unidentified Aerial Phenomena (UAP), the nature of which is unknown. The report states: “a majority of UAP were registered across multiple sensors, to include radar, infrared, electro-optical, weapon seekers and visual observation.”
Four years earlier, on October 19th, 2017, astronomers discovered the first interstellar object from outside the solar system, called 'Oumuamua. The object did not resemble any comet or asteroid observed before. It was inferred to have a flat shape and moved away from the Sun as if it were thin enough to be pushed by sunlight. Moreover, this pancake-shaped object tumbled every 8 hours and originated from the rare state of the Local Standard of Rest, which averages over the motions of all the stars in the vicinity of the Sun.
The existing data on UAP and ‘Oumuamua are sufficiently anomalous to motivate the collection of additional data on UAP or ‘Oumuamua-like objects and to test whether such objects may be astro-archeological artifacts or active technological equipment produced by one or more putative, existing or extinct extraterrestrial technological civilizations (ETCs).