Is Oumuamua An Alien Spaceship?

It’s been long thought that there are objects out in space moving around between stars, and sometimes they can pass through our solar system, and not long ago, something from deep space made a surprise visit.

Some say this visitor was a comet, or maybe an asteroid, but another astronomer strongly believes it is something completely different.

Was it the splintered remains of an exoplanet? Or was this interstellar visitor some kind of alien spacecraft in disguise...and why do some believe this?