Strange interstellar object 'Oumuamua is tiny and very reflective
 

After no small amount of mystery, we're starting to understand more about 'Oumuamua, the first known interstellar object to visit the Solar System. A newly published study indicates that the object can't be that large, for one thing. As the Spitzer...

https://www.engadget.com/2018/11/18/...tion-findings/