SpaceX团队完成人类首次载人环绕地球两极飞行任务
SpaceX团队完成人类首次载人围绕地球两极飞行任务，4名宇航员搭乘龙飞船成功降落太平洋。此次任务于上月底从佛罗里达发射升空，历时约4天，宇航员在430公里高空轨道观察探索地球两极。
期间团队开展22项科学实验，包括首次在太空拍摄人体X光图像和尝试种植蘑菇，并通过可穿戴设备监测宇航员健康数据，研究微重力环境对人体影响。
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Bitcoin mining is the process of adding new transactions to the Bitcoin blockchain. It’s a tough job. People who choose to mine Bitcoin use a process called proof of work, deploying computers in a race to solve mathematical puzzles that verify transactions.To entice miners to keep racing to solve the puzzles and support the overall system, the Bitcoin code rewards miners with new Bitcoins. “This is how new coins are created” and new transactions are added to the blockchain, says Okoro.
For some time, Mr. Durov and a few dozen staffers had no fixed headquarters, but rather traveled the world, setting up shop in one city after another, he told the Journal in 2016. The company now has its operational base in Dubai, though it says it doesn’t keep servers there.Mr. Durov maintains a yearslong friendship from his VK days with actor and tech investor Jared Leto, with whom he shares an ascetic lifestyle that eschews meat and alcohol.
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