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Aenor Edits
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But then the question is if interstellar travel does make sense at all.
Does it make sense to accumulated knowledge about a distance past?
"These were the Earthlings, 140 000 yaears ago.
well whatever their travel speed, they can still send messages back home at the speed of light. And 140,000 light years is the very opposite side of the galaxy, and then some. The
nearest star is just 4 light years away. They would have access to everything we know and all of recorded history,
almost. Just missing 4 years. They would be getting the story of how one of Earth's political leaders was pathetically lying about the size of the crowd at his inauguration. Seems like a long time ago to
me, but compared to the mammoths, not so much.
It is also possible that such explorers might encounter beings
more advanced than they. Who, instead of hunting mammoths, are hundreds of thousands, maybe millions of years
ahead of them. That information might take a 'long time' to arrive back home, but it would still be information about the "future" as far as they are concerned.
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But if you stay there, you could as well just stay any place else, in other words, at home.
One of the proposed 'solutions' to the Fermi paradox is that expanding out into space to other star systems is simply not high on the 'to-do list' of the alien civilizations for reasons we have yet to imagine.
It seems to us from reading our sci-fi that the 'future is in the stars'. But perhaps there are other things more interesting in 'inner space' or virtual reality or something we have not even thought of yet.
you have to admit, a breathable atmosphere and food to eat is hard to beat. Planets don't just come with oxygen. It is created by life. The planet influences the life and the life influences the planet. No other planet is ever going to 'fit' us quite as well. Or be full of stuff we can eat.
A little while back, there were people signing up for that bogus "Mars Colony" thing. But if they actually moved to Mars, they would have to spend the rest of their lives "indoors". I am climbing the walls after just a year. And I can go out with just a mask, I don't need a whole space suit.
Even though sometimes it seems like a good idea.