because giant and supergiant stage is very short
giant
Giant stars are commonly referred to as "giant" stars because of their large size compared to main sequence stars like the Sun. These stars are in a later stage of their evolution and have expanded in size due to the depletion of their core's hydrogen fuel.
Giant and supergiant stars are rare because they represent later stages in the life cycle of a star, which are shorter in duration compared to the main sequence phase. Additionally, the formation of giant and supergiant stars requires a massive initial stellar mass, which is less common in the universe.
The blue giant is blue because of the temperature of the gases surrounding the star. These stars are extremely hot.
When compared to the other stars, the Red Giant Star are very minute. There are other stars that are very large by far as compared to the Red giant stars.
Giant Dwarves are old stars.
Because they begin to run out of fuel
An average giant galaxy contains a trillion or more stars.
There are many giant stars. Some of the most well known are:AlcyoneThubanOctantisAurigaeCapellaArcturusMira
Because there not that hot
Because they are closer or actually brighter.
The red giant galaxies are large non-main sequence star of stellar classification. These are classified K or M because of the reddish appearance of the cooler giant stars.