https://www.livescience.com/avi-loeb-alien-technology-has-visited.html
An alien machine already visited us, Harvard astrophysicist still contends | Live Science
Jan 8, 2021 - Harvard astrophysicist Avi Loeb has reignited a debate about whether alien life can explain an object that visited the solar system in 2017 in a scathing new...
already visited usan alien