article_snippet: Supernova occur where there is a change in the core of a star.
article_snippet: A change can occur in two different ways, with both resulting in a supernova.
article_snippet: The first type of supernova happens in binary star systems. 
article_snippet: Binary stars are two stars that orbit the same point.
article_snippet: The first type of supernova occurs at the end of a single star’s lifetime.