That Harvard professor who said in 2017 that an interstellar space rock that passed through our solar system was alien technology now says that more are coming. He also happens to be flogging a new book.

That Harvard professor who said in 2017 that an interstellar space rock that passed through our solar system was alien technology now says that more are coming. He also happens to be flogging a new book. https://t.co/EgT24Yr8j7