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Nov 25, 2015 at 13:54 comment added fgysin Have a look at KEO, it is exactly this: a time capsule planned to be sent 50'000 years into the future. en.wikipedia.org/wiki/KEO
Nov 25, 2015 at 9:53 comment added Sobrique Actually that works quite nicely. I was pondering orbital motion - not least because with a (fairly long period) cometary orbit, you can have it visible from earth as a reminder until it actually returns. Imagine Halley's comet - visible every 86 years - but after 10 cycles will pass close enough to get captured and crash into the earth.
Nov 25, 2015 at 0:01 history edited Night_Fox CC BY-SA 3.0
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Nov 24, 2015 at 23:34 history edited Night_Fox CC BY-SA 3.0
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Nov 24, 2015 at 23:19 history answered Night_Fox CC BY-SA 3.0