Could an exploding star have been responsible for the death of the dinosaurs? This idea has become popular again as an explanation for the disappearance of the dinosaurs. An exploding star can blast material enormous distances into space. If this material reached Earth’s atmosphere, changes may have occurred that were We call an exploding star a supernova. Nova is the Latin word for new, and in ancient times, when an exploding star was observed, people often thought a new star was being born. The plural form of nova is novae. So when we talk of more than one supernova, we say supernovae. When a star has used all it’s nuclear fuel, the gravitational force that pulls the star’s material towards it’s center no longer has an opposing force to act against it. As a result the star collapses. A star that once had eight times as....

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