Spin of Supermassive Black Hole Measured at a Quarter the Speed of Light


This week, science reporter Isaac Schultz described a groundbreaking effort to measure the spin of a supermassive black hole, and a fascinating experimental archaeology experiment in which marines fought each otherto test how well ancient Mycenean armor works. Other science coverage included a botched SpaceX engine…

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from Gizmodo https://ift.tt/uoY9jb4

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