Red Dwarfs:
* Lifespan: Trillions of years.
* Why so long? Red dwarfs are the smallest and coolest stars. They burn their hydrogen fuel incredibly slowly, making them incredibly long-lived.
Orange Dwarfs:
* Lifespan: Tens of billions of years.
* Why slightly shorter than red dwarfs? They are slightly larger and hotter than red dwarfs, so they burn through their fuel a little faster.
Yellow Dwarfs (Like our Sun):
* Lifespan: Around 10 billion years.
* Why shorter than orange dwarfs? They are bigger and hotter than orange dwarfs, consuming their fuel more rapidly.
White Dwarfs:
* Lifespan: Billions of years.
* Not a true star: White dwarfs are the dense remnants of stars like our Sun after they have shed their outer layers. They are slowly cooling down and don't undergo nuclear fusion anymore.
Key Takeaway:
The smaller and cooler a dwarf star, the longer its lifespan. Red dwarfs are the champions, potentially lasting for trillions of years.
