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A comment on What life could be like for civilizations 1 trillion years from now. Parent comment

Re:What life could be like for civilizations 1 trillion year... by jcranmer on Saturday June 30, 2018 @12:10PM (#17431325)
You're sort of missing the biggest health problem of all: how do you make a self-sustaining closed ecosystem?
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Re:What life could be like for civilizations 1 trillion year... by mrep on Saturday June 30, 2018 @12:22PM (#17431387)
True, I was thinking more in the context of the mars trip you mentioned where you can generally take the resources you need for the trip. For intersteller travel, you would need to make it self sustaining since the travel times are so long and that would be extremely expensive.
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Re:What life could be like for civilizations 1 trillion year... by maxerickson on Saturday June 30, 2018 @01:48PM (#17431814)
The article suggests moving stars.
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