Here's why:
* Low Mass: Red dwarfs are the smallest and least massive stars. They have about 8% to 50% the mass of our Sun.
* Slow Fusion: Their low mass means they burn their hydrogen fuel at a much slower rate than larger stars.
* Low Temperature: Red dwarfs have relatively cool surface temperatures, contributing to their slow energy output and long lifespan.
Estimated lifespan: Red dwarfs can live for trillions of years, which is significantly longer than the Sun's estimated 10 billion year lifespan.
Important Note: While red dwarfs have the longest lifespans, they are also significantly dimmer than larger stars, making them difficult to observe.
