OUMUAMUA, Asteroid or alien ship?

Two scientists from the Harvard-Smithsonian Center for Astrophysics have proposed that 'Oumuamua, the first object born outside the discovered solar system, could be an extraterrestrial probe sent intentionally to explore our system. They made public their speculations last week in an article they added to the pre-publication repository arXiv.org and sent it to The Astrophysical Journal Letters. In it, they detail new calculations on the movement of the object, which, according to the authors, suggest that it would be a solar sailboat. His statements, however, have met the skepticism of other researchers who have studied the stranger 'Oumuamua
Source: https://www.google.com/amp/s/www.lavanguardia.com/ciencia/fisica-espacio/20181108/452799405492/oumuamua-nave-extraterrestre-cometa-interestelar.html%3ffacet=amp#