I thought I had some respect for Space.Com. Now I'm not sure why. Consider this paragraph:

"Alien civilizations with technology on a par with humanity's could be detectable using today's instruments. A new study suggests that if geostationary satellites are thick enough around an alien world, they could be spotted with telescopes already hunting for undiscovered planets."

It contradicts itself. It says if geostationary satellites were thick [numerous] enough, they'd be detectable by technology comparable to our own. First off, I don't think that's true, even if there were so many geostationary satellites that Earth looked like Saturn. Second, it starts out suggesting our satellites would be detectable now but then says "if the satellites were thick enough". For a number of reasons I won't bore you with, there will never be that many satellites in orbit around Earth.

I continue to think the best chance there is to connect to extrasolar civilizations is with directed radio signals. Consider SETI. What if everyone is listening but no one is saying anything? Despite it being a favorite vehicle of scifi, commercial radio signals are not strong enough to reach even the nearest star systems detectable.

We just don't know. But will continue to look because we won't to know.

Even if we were able to find them we do not have the technology to go to them yet.

There is no way to see a satellite on another planet. We can only know that other planets exist through them passing in front of stars. We cannot image those planets directly, but only speculate on their composition.

That sounds good, but right now we are only detecting relatively large planets by measuring fluctuations in light from the stars they orbit. We don't even actually see the planet much less rings of material in orbit around them.