because the less mass=less density so it expands and then it turns red.
All stars eventually turn into Red Giants or Super Giants
Stars typically turn red before they burn out.
Yes. The lowest mass stars are red dwarfs while many older stars turn into red giants and red supergiants.
Red (giant, supergiant or dwarf), Blue (supergiant), white (dwarf), blueish white/gamma-ray (neutron star) or produce no light at all (black hole).
Red giant stars.
If they have red stars including giants in, they can't be all that featureless.
Not necessarily. Blue stars are short-lived compared to other stars, so they can never be very old, but a red dwarf star can be any age.
The color of a star does not directly determine its age. Red stars are large and a little less hot then the Sun. Scientists can use the color of a star to determine its heat and then using that and its mass determine how old it is.
Because they don't want to be blue tiny's.
With red giants and main sequence stars they are not entirely featureless, therefore there is no name for them.
Yes, when stars get old and start to run out of fuel in their core, they expand and cool down, causing their outer layers to appear red. This phase is known as the red giant phase.
Red stars are not necessarily the oldest stars. Red stars are low-temperature stars that can be both old and young. The age of a star is determined by various factors, including its mass and chemical composition, rather than just its color.