The search for extraterrestrial intelligence (SETI) is a collective term for scientific searches for intelligent extraterrestrial life, for example, monitoring electromagnetic radiation for signs of transmissions from civilizations on other planets.Scientific investigation began shortly after the advent of radio in the early 1900s, and focused international efforts have been ongoing since the 1980s.
SETI researcher Brian Lacki proposes a new hypothesis for Type 3 Civilizations. "My thought was you harvest molecular clouds where material is relatively easier to collect." These free floating "dust" particles are networked together across huge distances. ‘In a sense the galaxy could become alive.’