An alien machine already visited us, Harvard astrophysicist still contends

An alien machine already visited us, Harvard astrophysicist still contends
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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 book.



January 9, 2021 at 06:56PM
via Space.com read more...