Scott Manley discussed long lived isotopes after the recent findings of Xenon decay: https://www.youtube.com/watch?v=O-pH9X29rBE https://www.youtube.com/watch?

Scott Manley discussed long lived isotopes after the recent findings of Xenon decay: https://www.youtube.com/watch?v=O-pH9X29rBE https://www.youtube.com/watch?v=O-pH9X29rBE But then went on to talk about metastable Tantalum 180. Ta180 has a half life of eight hours or so, but the metastable state, that is the nucleus is in an excited state has a supposed half life of millions of billions of years, quite a treat to learn this.