"Main sequence" stars are no longer new, and are just cookin' along for millions of years.
"Main sequence" stars, depending on their weight and whether they orbit another nearby star can get old and become red dwarfs, white dwarfs, black dwarfs, neutron stars, novas, or super-novas.
Because newer stars are forming at the outer edges, and because the gravitational pull is stronger for the older stars.
I think it was Lise, I am not sure.
Annemarie's older sister who died was Lise. Annemarie's younger sister is Kirsti.
nothing they stay the same.
Older stars
I think you are describing a "globular cluster", which are associated with older stars by most astronomers.
Elliptical galaxies have a red color because the stars in them are older and cooler. An example of an elliptical galaxy is Maffei 1.
Harrison Ford
Spiral galaxies tend to have older stars towards the core and younger stars in the outer arms
A cluster of tightly packed older stars is called a globular cluster. These clusters can contain thousands to millions of stars, and are usually found in the outer regions of galaxies.
U.S flag currenly has 50 stars, the older one had 13
no