Voyage to an asteroid and a comet

Six centuries ago, Admiral Zheng He commanded seven “treasure voyages” around Asia in the halcyon days of China’s Ming Dynasty. His fleet of colossal four-masted wooden junks — the largest ships of their day, each crewed by hundreds of mariners — plied the South China Sea and Indian Ocean, traveling as far as Arabia, theContinue reading “Voyage to an asteroid and a comet”
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