Harvard Astrophysicist Suggests Interstellar Object 3I/ATLAS May Be Alien Technology
Harvard astrophysicist Avi Loeb proposes that the interstellar object 3I/ATLAS could be a technological artifact from an advanced alien civilization, sparking debate within the scientific community.
On July 1, 2025, astronomers detected 3I/ATLAS, the third known interstellar object to enter our solar system, following 'Oumuamua in 2017 and Comet Borisov in 2019. The object is traveling at approximately 130,000 mph and exhibits a glowing gas envelope about 15 miles wide, characteristics typical of a comet.
Harvard astrophysicist Avi Loeb has proposed that 3I/ATLAS could be a technological artifact from an advanced alien civilization. In a preprint paper, Loeb and his colleagues suggest that the object's speed and trajectory are unusual, and its path through the solar system, which brings it close to several planets, might not be random. They also note that 3I/ATLAS achieves perihelion on the opposite side of the Sun relative to Earth, which could be intentional to avoid detailed observations from Earth-based telescopes.
Loeb's hypothesis has been met with skepticism from the scientific community. Many astronomers assert that 3I/ATLAS exhibits classical cometary features and is likely a natural object. Critics argue that the alien technology theory lacks robust evidence and risks heading into speculative territory without substantial scientific backing.
As 3I/ATLAS continues its journey through the solar system, astronomers are conducting detailed observations to learn more about its composition and behavior. The object is expected to reach its closest point to the Sun at the end of October and pass by Earth at a distance of 167 million miles in December.