First ‘Overtones’ Heard in the Ringing of a Black Hole


https://www.caltech.edu/about/news/first-overtones-heard-ringing-black-hole?fbclid=IwAR1MXbT354Nl57rnLzTFTNlv05nf8Je3YU20kURKf2W4OUbhzMNV7_pltGE

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Space hotel with artificial gravity will be in orbit by 2025


https://bigthink.com/technology-innovation/space-hotel-artificial-gravity-2025-plans?utm_medium=Social&facebook=1&utm_source=Facebook#Echobox=1568383734