“Signs of advanced alien intelligence will be indistinguishable from nature,” says futurist Karl Schroeder. On October 19, 2017, astronomers discovered the first known interstellar object to visit our solar system. First spotted by the Panoramic Survey Telescope and Rapid Response System 1 (PanSTARRS1) telescope located at the University of Hawaii’s Haleakala Observatory, the object defied easy description, simultaneously displaying characteristics of both a comet and an asteroid.
Two mind-boggling conjectures about the existence of advanced alien civilizations have been made by Harvard’s chief astronomer and the director of Columbia University’s Astrobiology Center.
When Oumuamua, the first known interstellar visitor, raced through our solar system last year, astronomers had a first glimpse of a visitor from another star and immediately wondered: where did it come from? New research by Coryn Bailer-Jones with the Max Planck Institute for Astronomy and his colleagues suggests that four stars that could have been ‘Oumuamua’s home. “Of all the studies that have been done on the origin, I think this is the most comprehensive,” Bailer-Jones says.