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1. 12,000kms/s+ Fusion Highways for cheap, simple interplanetary travel (toughsf.blogspot.com) 2 points by matterbeam on March 12, 2021 | past 2. Motorized Orion: Giant Nuclear Piston (toughsf.blogspot.com) 1 point by matterbeam on Jan 10, 2021 | past 3. Nuclear Photon Starships (toughsf.blogspot.com) 2 points by matterbeam on Nov 16, 2020 | past | 1 comment 4. Hypervelocity Macron Accelerators (toughsf.blogspot.com) 3 points by matterbeam on Nov 27, 2019 | past | 1 comment

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