Just a rock or first contact coming?
https://www.theatlantic.com/science...milner-oumuamua-interstellar-asteroid/547985/
Astronomers around the world chased after the mysterious space rock with their telescopes, collecting as much data as they could as it sped away. Their observations revealed a truly unusual object with puzzling properties. Scientists have long predicted an interstellar visitor would someday coast into our corner of the universe, but not something like this.
“The more I study this object, the more unusual it appears, making me wonder whether it might be an artificially made probe which was sent by an alien civilization,” Avi Loeb, the chair of Harvard’s astronomy department and one of Milner’s advisers on Breakthrough Listen, wrote in the email to Milner.
https://www.theatlantic.com/science...milner-oumuamua-interstellar-asteroid/547985/