10 trillion galaxies times 100 billion stars. One trillion squared. That's what we are talking about. In addition, the universe is possibly 250 times larger than the observable universe. Mind boggling.
First Observed Interstellar Object
'Oumuamua is possibly a lightsail object sent for observation, and in any case is definitely from outside the solar system (from another solar system altogether).
> Last year, the first unambiguously interstellar object, 'Oumuamua, flew through our Solar System, delighting and amazing astronomers worldwide. Coming in at a steep angle with an incredibly large speed and a bizarre, cigar-like shape, it must have originated far away and long ago, most likely from a distant star system.