“Judge Of Heaven” Appearance Stuns Scientists As Pope Moves To Calm Fears

First detected by Pan-STARRS telescopes in Hawaii, they first designated this mysterious object as being Comet C/2017 U1, but because it showed no presence whatsoever of any cometary nature., the International Astronomical Union’s Minor Planetary Center then renamed it to Asteroid A/2017 U1—thus making it the first comet to ever be re-designated as an asteroid.

With this mysterious object now named A/2017 U1, the simple fact remains that no one really knows what it is, because it’s the first “thing” in recorded history to have ever been seen in our solar system coming from deep interstellar space—and led the Manager of the NASA Near Earth Orbit Program Office at JPL, Dr. Paul Chodas, to exclaim: “We have been waiting for this day for decades.  It's long been theorized that such objects exist - but this is the first such detection.”
Source: http://www.whatdoesitmean.com/