Can't remember the author of the quote.

Regarding the article;

What's to say them extraterrestrial aren't proficient housekeepers and don't leave parts behind?

Have to update large telescope best magnitude to 26 from 24. Still, it's amazing that 99.999% of the galaxy is unexplored.

Besides, alien probes could be the size of golf balls for there initial test to determine how developed we are not and then adjust the size and tech for surveillance purposes. Damn tough to find artifacts that small.

I think there are so many options to superior technology we wont know for many decades or probably a century at our current rate. I like to think with regards to time that there is hope this young Solar system doesn't have a corner on intelligent life.