Study didn't "find" anything. An "I want to believe" scientist wrote a speculative paper arguing that it's not provably totally impossible that the object is a space ship. Most of the rest of astronomy disagrees.
> Oumuamua is the first object human beings have ever seen in our solar system that is known to have originated outside of it.<p>Does this mean all the comets we see/track, all of them originated in the Solar system? I would have imagined at least few comets would have originated outside our solar system.
Link to paper: <a href="https://arxiv.org/pdf/1810.11490.pdf" rel="nofollow">https://arxiv.org/pdf/1810.11490.pdf</a>