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Welcome to ANI in the air wondrous Wednesday where I talk about something
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wondrous. So today I thought I would talk about this, it was a vlog posting I came
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across and essentially it's about losing the universe. So the universe under our
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current understanding of it is expanding and apparently, I didn't actually know
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this, it's kind of embarrassing, but I guess it doesn't expand in the parts that are
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gravitationally bound, so like inside of galaxies or clusters of galaxies, but it
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the clusters, the space in between them expands and so as time goes on it gets
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farther and farther apart and so as the light from those stars travel I can't
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actually cross the distance of all that expansion at some point. And so the idea
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is basically we're losing a view of the universe and and so kind of if you're
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just at any point in the universe you think about how far it's been since the
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Big Bang when it all started. I believe that's still fashionable to consider
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that as part of the the model. Then you know how much can you not see from
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that point. So there's a table on this thing, it says after 1 million years 0.02
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percent of the galaxies are lost, 10 million years 0.2 percent, 100 million
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years 2 percent, 1 billion years 20 percent, 10 billion years 80 percent, 150
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billion years approximately 99.999997 percent of the universe is gone. So we're
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you know we're at a point where we can still see a lot of the universe but in
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about a hundred and fifty billion years that's about five billion in about five
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billion years we the Sun explodes and consumes the earth so I don't really
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need to worry about this but after about 150 billion years essentially what we
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see will be our local cluster of galaxies and so there's about I guess
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our local group has about 50 nearby galaxies and in total that comes to
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about two trillion stars so still a lot but the rest of the universe will just
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be blackness and incidentally in case you were curious and I certainly didn't
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know this after 150 billion years
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they'll still be the smallest stars powered by fusion the red dwarf stars
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they're expected to last about 10 trillion years so one could potentially
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still have life going on probably I don't know about forming new life or not
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no idea but certainly if existing life such as ourselves manages to get off
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this planet and start propagating across the galaxy and across the other ones you
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know it on these timescales is quite possible and there are things called
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like well Dyson sphere is the short name but Dyson swarm is kind of the cool
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thing where it's like pieces of stuff circling the Sun and kind of collecting
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the energy from the Sun and surviving off of that and so by changing where it
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is based on the power of the Sun the star that you're happen to be around you
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know you can you can make things work and then the post continues to finish
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off with that that apparently the last of the stars current model will be 10
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quatillion years that's a 10 or I guess a 1 followed by 19 zeros so that is what's
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in that post I just thought that was kind of cool I know the idea of just the
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universe going far away from us expanding expanding till we're just this
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small little group of galaxies two trillion stars I think of that when the
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next time you see Doctor Who and visiting some you know traveling through
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all of space and time and like half the episodes on earth it's like really you
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know I love the show just saying but um alrighty I'll hopefully post that link
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along with this podcast alright well that is wondrous Wednesday I hope you
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are wondering what the heck I was just talking about and maybe click on that
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link you all have a good day I'll see you when I see you hopefully before the
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universe fades away