They observe things right here on Earth, even up to the orbit of satellites. That effort, no matter how secretive, is very well funded. Now, looking for a needl

They observe things right here on Earth, even up to the orbit of satellites. That effort, no matter how secretive, is very well funded. Now, looking for a needle in the universal hay stack takes time and dedication, you can't seriously expect a massive sky scan to be completed in four decades, specially when the funding is not that generous.