Pokusao sam da ih poredjam po gustini. Pa me zanima da li je redosled dobar i da li je nesto preskoceno.

- Zvezda
- Crveni dzin
- Beli patuljak
- Neutronska zvezda
- Magnetar
- Crna rupa

Cudno je to sa zvezdama, one evoluiraju i ta evolucija je pod uticajem kako nuklearnih procesa tako i mase. Generalno gustina raste kada gravitacija nadjaca sile nuklearnih procesa u jezgrima svezda (koji teze da materiju izbace u prostor) i kada evolucija krece ka neutronoj zvezdi i konacno crnoj rupi. Gustina mozda i varira???

Mislimda je ta lista ok, jedino nisam siguran sta se desava sa crvenim dzinovima, jer tu u stvari raste sfera zvezde (ona kao da se napuhuje), pa mi se sve nekako cini da tu gustina treba da opada (iako mozda masa raste, ali mozda volumen raste jos i vise ), ali, pricam a da nisam profesionalni astronom ili jos bolje astrofizicar, tako da...

evo jednog teksta:

The Lifecycle of a Star

Stars are formed in gigantic, cold, globular clouds containing tens of thousands or even millions of solar masses worth of dust that condense into individual stars. First, they form protostars, a clump of gas held together by gravity but always wanting to fly apart from the force of thermonuclear reactions. Protostars are surrounded by gas and dust, which prevent them from being seen. Eventually, the protostar settles down into a T-Tauri, which is the first stage we can see. Nuclear fusion reactions start, and the star enters the Main Sequence. Stars spend most of their life, approximately 90%, in the Main Sequence. As stars start reaching the end of their lives, they turn into giants or supergiants and begin synthesizing heavy elements. When these heavier fusion reactions start to burn out, the stars either eject a planetary nebula or turn into supernovas, depending on their mass. Stars of about 5 stellar masses or less turn to nebulas, and stars of greater than 5 solar masses turn nova. The final resting stage of stars is also dependent on mass. Stars of less than 1.4 solar masses become white dwarfs, stars of 1.4-8 solar masses become neutron stars, and stars with more than 8 solar masses end their lives as black holes.

izvor:
http://www.essortment.com/lifecycle-star-61724.html