“Might” means probability of what?
Alone in the universe as in which specific definition of the universe?
If any technological civilization evolved somewhere in the universe within the period when our solar system existed, and that civilization made an concerted effort to show us an unmissable sign of its existence that conquers any distance or intervening obstruction, that civilization still has to be in a very tiny portion of the entire observable universe, roughly a volume equal to 0.5% of the total observable universe, for it to even be theoretically possible for us to see those signs.
Alone in the universe as in which specific definition of the universe?
If any technological civilization evolved somewhere in the universe within the period when our solar system existed, and that civilization made an concerted effort to show us an unmissable sign of its existence that conquers any distance or intervening obstruction, that civilization still has to be in a very tiny portion of the entire observable universe, roughly a volume equal to 0.5% of the total observable universe, for it to even be theoretically possible for us to see those signs.
