If you mean a red dwarf, then trillions of years. In fact, no red dwarf has been observed to "die".
A star does not turn into a red dwarf. A red dwarf is simply a star that has a low mass to begin with.
Gliese itself does not exist, but Gliese 581 is a red star.
Red, very small and cold.
A red dwarf is a small old star :)
The bigger the star, the faster it dies. Super-massive stars like Betelgeuse, the red supergiant at the shoulder of Orion, probably don't exist much longer than a few hundred thousand years. Our Sun will exist for about 9 billion years before it expands into a red giant. Tiny red dwarf stars can exist for tens of billions of years or more.
it will stay a red giant for a couple of million years
no as if red elephants exist
Red giant - then a white dwarf.
The red star is the coolest and the blue star is the hottest
Red giant is a type of star.
Due to the low rate of fusion, a red dwarf can last for tens of billion of years. Depending on the initial mass of the star, they can last from 30 -> 40 times that of our own Sun to as long as 10 trillion years for a 0.1 solar mass star.
It depends on what kind of red star you are referring to. There are red dwarfs and red giants. A blue star is larger than a red dwarf but smaller than a red giant.