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Showing below up to 13 results in range #1 to #13.
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- Conservation Laws: Limits to Cheating
- Propulsion - Beamed Energy, Beamed Reaction Mass
- Propulsion - Beamed Energy, Harvested Reaction Mass
- Propulsion - Beamed Energy, Internal Reaction Mass
- Propulsion - Harvested Energy, Beamed Reaction Mass
- Propulsion - Harvested Energy, Harvested Reaction Mass
- Propulsion - Harvested Energy, Internal Reaction Mass
- Propulsion - Internal Energy, Beamed Reaction Mass
- Propulsion - Internal Energy, Harvested Reaction Mass
- Propulsion - Internal Energy, Internal Reaction Mass
- Q-drive
- Solar Sail
- Space Radiation