Honestly, the whole radio transmission thing is irrelevant to even marginally advanced aliens. The James Webb telescope is mind-boggling to us now. Just thirty years ago, it was the comparatively puny Hubble that wowed us. Imagine an alien civilization just a hundred or so years more advanced than us. I'm not talking about a Star Trek race with faster than light capability (assuming physics even allows that). I'm just talking about a civilization that has spread out from its home planet to establish artificial habitats to live in and mining and industrial bases on their equivalent of the moon and/or asteroids. They will be capable of building space-borne telescopes that make the Webb look like a small pair of binoculars. They will be able to image Earth directly, spectroscopically analyze the atmosphere and determine beyond any doubt that a technological civilization lives here.
If there are any nearby alien civilizations even marginally more advanced than we are, they know we're here. If they are thousands of light years away, they only know that complex life has developed here. If complex life is rare, that alone will make our planet very interesting.
If there are any nearby alien civilizations even marginally more advanced than we are, they know we're here. If they are thousands of light years away, they only know that complex life has developed here. If complex life is rare, that alone will make our planet very interesting.
Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.
Albert Einstein
Albert Einstein
