I read somewhere it would take a radio signal 100,000 light years to cross the Milk Way...the Earth is 4 Billion years old, the Universe 13.8...assuming intelligent life exists elsewhere in the Milky Way shouldn’t we have encountered some intelligent communication of some kind by now?
It could have passed us. Once a signal goes by it’s gone. You can’t turn on your radio and hear what they played last year. And since we’ve only had functioning radios for 100 years and change that’s a whole lot of not being able to hear. If they’re using our frequencies.