Small, old, relatively cool star
- A dwarf star, ranging in mass from one-tenth to one-half the mass of the sun, whose relatively cool surface temperature makes it appear red-orange in color
- Red dwarfs burn very slowly and live for about 100 billion years. Although they are difficult to see, they are likely the most abundant type of star
- Proxima Centauri is the nearest-known star to the Sun and is a red dwarf