China sends 1st-ever ‘unhackable’ signal from space to Earth


Scientists in China have successfully transmitted entangled photons farther than ever before, achieving a distance of more than 1,200 km (745 miles) between suborbital space and Earth. Using the ‘quantum satellite’ Micius, the scientists were able to communicate with three ground stations in China, each more than 1,000 km (621 miles) apart.
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