Do intelligent extraterrestrial civilizations exist, capable of interstellar travel? Harvard astronomer Professor Avi Loeb leads the Galileo Project to investigate.
Spearheaded by a multi-institutional team under Harvard University, the Galileo Project systematically searches for evidence of extraterrestrial technological civilizations (ETCs)—whether defunct or active—using rigorous scientific methods.
This initiative builds on the 2017 discovery of the first confirmed interstellar object in our Solar System, 'Oumuamua.' Dismissed by some as an asteroid, comet, or planetary fragment, it exhibited highly anomalous properties defying conventional natural explanations, per Harvard's press release.
While unprecedented natural origins remain possible, Professor Loeb urges considering it as potential evidence of extraterrestrial technology. He posits the cigar-shaped object was a probe with a solar sail and explored this in his January book, The First Sign of Extraterrestrial Intelligent Life. The French edition boldly states: "If I'm right, this is humanity's greatest discovery."
Beyond Oumuamua, the project's momentum grew from the ODNI report on Unidentified Aerial Phenomena (UAP), delivered to Congress on June 25, which documented unexplained UAPs.
With thousands of Earth-like exoplanets now known, the team argues we must confront the possibility of ETCs. Science demands unbiased empirical inquiry, unhindered by stigma. As the press release notes: "Discovering extraterrestrial technology would transform science and our worldview."
The Galileo team applies the scientific method through transparent analysis of open data from optimized instruments to classify interstellar objects and UAPs. High-resolution telescope arrays at strategic sites will capture images, with all data publicly accessible.
Advanced AI and deep learning will distinguish birds, balloons, drones, satellites, and potential technological artifacts. The project integrates surveys like the Vera C. Rubin Observatory's Legacy Survey of Space and Time (LSST) to track Oumuamua-like visitors. Future plans include conceptualizing space missions, possibly with agencies or companies, to intercept these objects near the Sun.
Named after the pioneering astronomer Galileo Galilei (1564–1642), the project echoes his words from Dialogue Concerning the Two Chief World Systems (1632): "All truths are easy to understand once discovered—the point is to discover them."
