Delta4Embassy
Gold Member
We're sending our radio signals in every direction for almost a hundred years now. So why aren't we picking up any from other species? The reason I worry about is simple enough: nearby alien species with technology realize there are hostile alien races who send invasion or attack fleets to detected intelligent planets for conquest or annihilation so keep their radio transmissions to a local variety, not ones that radiate out into space. Imagine a dot representing our Sun with lots of red dots all around representing hostile alien races. Could be on their way right now. On the more cheerful side, could be a friendly one on the way too who'll say "SHHHHH!"