Using Earth Technology, Could They Find Us?

If i shine a flashlight in their direction right now to night, it would get there in four years. And some of those potons from your flashlight would actually hit proxima b. Every point in the solar system could potentially see your flashlight. But of course, it wouldn't be very bright any more, because it would have spread out so much. If we're just more like sending signals out into space generally, then i'd be much harder to discover it. Those signals would die off vey very rapidly. So if you had a dish like that on proxima centauri, we'd have to send signals that were like 16 times stronger in order for an aro sebo on