Mysterious Hypatia stone might hold earliest evidence of Type Ia supernova - Ars Technica

Latest chemical "forensic" analysis finds telltale abundances of trace elements.

Enlarge/ Tiny samples of the Hypatia stone next to a small coin. Rare type Ia supernovas are some of the most energetic events in the universe. Researchers found a consistent pattern of 15 elements i… [+3005 chars]

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