Most of our experience with the Search for Extraterrestrial Intelligence (SETI) has been focused on capturing radio signals that alien species have sent out, whether intentionally or unintentionally. what if there aren't any alien civilizations broadcasting radio signals now, but there were a billion years ago?
Most of our experience with the Search for Extraterrestrial Intelligence (SETI) has been focused on capturing radio signals that alien species have sent out, whether intentionally or unintentionally.
what if there aren't any alien civilizations broadcasting radio signals now, but there were a billion years ago?
hoping that we exist at the same time as an alien civilization that happens to be actively messaging is a huge leap of faith.
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Most of our experience with the Search for Extraterrestrial Intelligence (SETI) has been focused on capturing radio signals that alien species have sent out, whether intentionally or unintentionally. what if there aren't any alien civilizations broadcasting radio signals now, but there were a billion years ago? hoping that we exist at the same time as an alien civilization that happens to be actively messaging is a huge leap of faith.
The Milky Way is around 13 billion years old. by looking for evidence of them in lunar dirt.
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