Researchers say that the stone's composition has never been observed before, and their main hypothesis involves a type Ia supernova, one of the brightest phenomena in the universe.
Supernovae in the Stones scienceblog.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from scienceblog.com Daily Mail and Mail on Sunday newspapers.
24 Facts About the Solar System | Mental Floss mentalfloss.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from mentalfloss.com Daily Mail and Mail on Sunday newspapers.