We should be hiding our presence, instead of searching for alien civilizations. Any civilization advanced enough to respond must be on a relatively old planet, likely overcrowded, polluted, losing its magnetic shield, or its star becoming a red giant. Thus they will need a new planet; and they won’t be in a position to ask politely.
We should be hiding our presence, instead of searching for alien civilizations. Any civilization advanced enough to respond must be on a relatively old planet, likely overcrowded, polluted, losing its magnetic shield, or its star becoming a red giant. Thus they will need a new planet; and they won’t be in a position to ask politely.