This tiny space rock might be the 1st physical evidence of a rare supernova

A space rock discovered more than two decades ago may be the first physical evidence of a rare type of powerful stellar explosion called a Type Ia supernova, according to a new study.

In 1996, a researcher working in the Egyptian desert found a small pebble that scientists later determined was likely extraterrestrial in origin, as it comprised mysterious mineral compounds found nowhere else on Earth. In the new study, scientists at the University of Johannesburg in South Africa say they’ve found that this space rock — called the Hypatia stone after the ancient Greek philosopher and astronomer — might be the first physical evidence of a Type Ia supernovaone of the most energetic phenomena in the universe.

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