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Fermi Paradox
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<blockquote data-quote="Num7" data-source="post: 222451" data-attributes="member: 1"><p>Where's everyone?!? <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite65" alt=":alien:" title="Alien :alien:" loading="lazy" data-shortname=":alien:" /></p><p></p><p>I like to think about the Fermi paradox. Since the universe is kind of infinite from our point of view, the super tiny chances of intelligent life make it so that there must be tons of civilizations out there, in every direction.</p><p></p><p>Even 1 civilization/galaxy, would make it 125 billion civilizations in the observable universe alone. Or 1/1M galaxies would make it 125K civs in the observable universe. Or again, 1/1B galaxies = 125 civilizations in the observable universe, even that wouldn't be that bad compared to being alone in the dark forever.</p><p></p><p>Take note that these numbers don't take into account the time frames in which those civilizations show up, though. Time is so vast, a billion-bazillion civilizations might have existed or will exist, but none of them simultaneously.</p><p></p><p>Back to how big and infinite the Universe is... Distances in the universe are so vast (that's a weak word to describe it, the universe and the empty space between things/places is HUUUUUUUUUGE), perhaps it's absolutely impossible (unthinkable) to travel and reach or even detect another civilization, millions or billions of light-years away. No matter how advanced you are.</p><p></p><p>If there's a hard limit to the speed you can travel (<speed of light,) I don't think we're likely to get in touch with those aliens, or them with us. It means you're are condemned to only ever visit your close stellar neighborhood, and that's it. Same with radio signals. If there's a hard limit that can't be beaten, we'll never detect radio signals from aliens sitting at the other end of the universe, let alone the Milkyway. Same with time itself. Cheating time using unknown physics in order to reach others. All those things are sci-fi stuff right now. Maybe they're possible, maybe not.</p><p></p><p>You really got me started there!</p></blockquote><p></p>
[QUOTE="Num7, post: 222451, member: 1"] Where's everyone?!? :alien: I like to think about the Fermi paradox. Since the universe is kind of infinite from our point of view, the super tiny chances of intelligent life make it so that there must be tons of civilizations out there, in every direction. Even 1 civilization/galaxy, would make it 125 billion civilizations in the observable universe alone. Or 1/1M galaxies would make it 125K civs in the observable universe. Or again, 1/1B galaxies = 125 civilizations in the observable universe, even that wouldn't be that bad compared to being alone in the dark forever. Take note that these numbers don't take into account the time frames in which those civilizations show up, though. Time is so vast, a billion-bazillion civilizations might have existed or will exist, but none of them simultaneously. Back to how big and infinite the Universe is... Distances in the universe are so vast (that's a weak word to describe it, the universe and the empty space between things/places is HUUUUUUUUUGE), perhaps it's absolutely impossible (unthinkable) to travel and reach or even detect another civilization, millions or billions of light-years away. No matter how advanced you are. If there's a hard limit to the speed you can travel (<speed of light,) I don't think we're likely to get in touch with those aliens, or them with us. It means you're are condemned to only ever visit your close stellar neighborhood, and that's it. Same with radio signals. If there's a hard limit that can't be beaten, we'll never detect radio signals from aliens sitting at the other end of the universe, let alone the Milkyway. Same with time itself. Cheating time using unknown physics in order to reach others. All those things are sci-fi stuff right now. Maybe they're possible, maybe not. You really got me started there! [/QUOTE]
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