Stephen Hawking experiences simulated zero gravity https://t.co/LZcYoih0QH https://video.twimg.com/ext_tw_video/1778864460628729856/pu/vid/avc1/546x374/m0cqeXIcf-Kno5Be.mp4?tag=17
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Stephen Hawking experiences simulated zero gravity https://t.co/LZcYoih0QH https://video.twimg.com/ext_tw_video/1778864460628729856/pu/vid/avc1/546x374/m0cqeXIcf-Kno5Be.mp4?tag=17
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