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    29 33,889 04-07-2018, 06:45 PM
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Go to first unread post Mega-Planetary Rings (Pages: 1 2 )
Cray, 01-28-2015, 05:27 AM
 17 33,511 11-02-2016, 08:43 PM
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18 33,305 08-13-2015, 03:18 AM
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11 30,599 07-15-2013, 02:23 PM
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Go to first unread post Humans on Mars by 1970 (Pages: 1 2 )
stevebowers, 05-17-2013, 04:25 AM
 10 29,041 05-20-2013, 08:44 AM
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Go to first unread post FM-2030 (Pages: 1 2 )
xsampa, 06-24-2014, 02:38 AM
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    13 28,134 06-16-2016, 03:59 PM
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Go to first unread post Water? In MY upper mantle? (Pages: 1 2 )
Michael Douglas, 06-15-2014, 03:54 AM
 13 27,468 07-14-2014, 11:57 AM
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Go to first unread post Proxima Centauri b (Pages: 1 2 )
PortalHunter, 08-25-2016, 10:17 AM
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Go to first unread post Breakthrough Starshot (Pages: 1 2 )
PortalHunter, 04-13-2016, 10:28 AM
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Go to first unread post Robot rights (Pages: 1 2 )
ai_vin, 02-26-2017, 06:12 AM
 17 26,010 06-14-2017, 09:02 AM
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Go to first unread post The culture of The Culture (Pages: 1 2 )
Matterplay1, 12-01-2014, 04:18 AM
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Go to first unread post The case for Autointerdiction. (Pages: 1 2 )
Bear, 01-17-2017, 07:01 AM
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    24 24,549 01-18-2019, 03:46 AM
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Go to first unread post Warp and Reactionless drive topic (Pages: 1 2 )
viperzerofsx, 04-28-2015, 02:21 AM
 13 24,434 05-03-2015, 05:19 AM
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Go to first unread post Terraformed Mars in the 19th Century (Pages: 1 2 )
Cray, 04-21-2015, 02:49 AM
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