Carbonado compared to carbon‑12, relative to typical diamonds). Carbonado exhibits strong luminescence (photoluminescence and cathodoluminescence) induced by nitrogen and by vacancies existing in the crystal lattice. Luminescence halos are present around radioactive inclusions, and it is suggested that the radiation damage occurred after formation of the carbonados, an observation perhaps pertinent to the radiation hypothesis listed below. The origin of carbonado is controversial. Some proposed hypotheses are as follows: None of these hypotheses for carbonado formation had come into wide acceptance in the scientific literature by 2008. Supporters of an extraterrestrial origin of carbonados propose that their material source was a
Now That's What I Call Rock Now That's What I Call Rock Now That's What I Call Rock is a compilation album released on January 22, 2016, by the distributors of the popular "Now That's What I Call Music" series in the United States. The collection brings together a diverse group of artists from a range of styles such as "EDM textures, summer festival blues-rock chug, arena alternative, post-Tool hard rock, triumphant psych-pop and cosmopolitan retro experiments." Despite the popularity of the "Now" albums, rock compilations have been an area of neglect by record companies. To reach out to a broad audience, the first rock volume