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purity | |||
100% | MARS (2) | Mountainous And Really Sandy |
Philip Edwards (The planet Mars is home to Olympus Mons, at 24 km high, the highest mountain known.) Science:Astronomy:Planets |
86% | QUASAR | Quite Unusually Active Sources At Radio-wavelengths |
Philip Edwards Science:Astronomy |
100% | ROCKETS | Reach Orbit Converting Kinetic Energy, Transporting Satellites |
Philip Edwards Science:Astronomy |
100% | SUN (2) | Star, Usefully Nearby |
Philip Edwards Science:Astronomy |