Here's why:
* Mass is key: Supernovae happen when a star runs out of fuel and its core collapses under its own gravity. This collapse triggers a powerful explosion. Stars need to be at least 8 times more massive than our Sun to experience this core collapse.
* Sun's fate: Our Sun is a "main sequence" star, meaning it's currently fusing hydrogen into helium in its core. In about 5 billion years, it will run out of hydrogen fuel. Then, it will expand into a red giant, engulfing Earth in the process. After that, it will shed its outer layers, leaving behind a white dwarf – a small, dense remnant of its former self.
So, while our Sun will eventually die, it will not go supernova. It will peacefully transition into a white dwarf, a much less dramatic end than a supernova.