I wasn't aware of this telescope. It's pretty impressive.
I looked around and found this video, and a couple of other reports on it.
Personally, I disagree with the "Aggressive Aliens" theory. A civilization advanced enough to get to Earth would have no need to conquer it.
First, it wouldn't be worth the effort. Our technology would be inferior, and our natural resources could be found on any number of uninhabited worlds. Not tho mention, they would have learned the harsh lessons of aggressive behaviors long ago. In short, we're projecting our primitive behaviors on to them.
I believe the possible harm suffered would be unintentional, as in contamination, both biological and cultural.
But I also think those threats would be recognized by an advanced civilization as well.
Aggression is self destructive, so I doubt there will be any Klingons in our future.
Posted 76 day(s) ago