Here's why:
* Main Sequence: This is the stage where a star fuses hydrogen into helium in its core, generating energy and producing light and heat. This is a stable and long-lasting process.
* Other Stages: The time spent in other stages, like red giant, white dwarf, or supernova, is relatively short compared to the main sequence.
Think of it like this: Imagine a star's life as a journey. The main sequence is the long, steady highway, while the other stages are brief detours or destinations at the end of the journey.
