* Our sun is a middle-aged star: It's about halfway through its main sequence lifespan, which is about 10 billion years.
* It won't explode like a supernova: Our sun isn't massive enough to go supernova. Supernovas happen with stars much larger than our sun.
* It will eventually become a red giant: In about 5 billion years, the sun will run out of hydrogen fuel in its core. It will then start fusing helium, expanding dramatically into a red giant. This expansion will engulf the inner planets, including Earth.
* It will eventually become a white dwarf: After the red giant phase, the sun will shed its outer layers, leaving behind a dense, hot core called a white dwarf. This white dwarf will slowly cool and fade over billions of years.
So, while our sun won't explode in a spectacular supernova, it will experience a dramatic end, eventually becoming a white dwarf.
