Orion's Arm - Encyclopedia Galactica - Niven Clouds (Smoke Rings)
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Orion's Arm - Encyclopedia Galactica - Ringworlds
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Mega Structures - (4) MEGASTRUCTURES CATEGORY: STELLAR SCALE ALTERNATE NAMES / SIMILAR STRUCTURES: NIVEN RING Ringworld is an artificial ring in space large enough to maintain an atmosphere and habitable land. The
Ringworld - Wikipedia
Book review of Ringworld by Larry Niven
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Orion's Arm - Encyclopedia Galactica - Niven Clouds (Smoke Rings)
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Smoke Ring by Larry Niven - First Edition - 1987 - from All Booked (SKU: 007568)
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