What are time crystals? Try this: * Physicists Predict The Existence of Time Crystals https://www.technologyreview.com/s/426917/physicists-predict-the-existenc

What are time crystals? Try this: * Physicists Predict The Existence of Time Crystals https://www.technologyreview.com/s/426917/physicists-predict-the-existence-of-time-crystals/ https://www.technologyreview.com/s/426917/physicists-predict... * How to Build A Space-Time Crystal https://www.technologyreview.com/2012/06/26/255685/how-to-build-a-space-time-crystal/ https://www.technologyreview.com/2012/06/26/255685/how-to-bu... (Reposted from an earlier submission in 2016: https://news.ycombinator.com/item?id=12655530 https://news.ycombinator.com/item?id=12655530)