what is the third stage of the star cycle
protostar
The core of a star contracts under the force of its own gravity. This contraction increases the temperature in the core.
The young star stage because at that stage, stars are just burning, no interruptions or disturbances
it doesn't.......
Formation of the star out of a giant cloud of gas and dust.
WHITE DWARF ;p
dust
The "main sequence".
stellar nebula
No, it's a possible stage in the life cycle of a star.
You can tell by its size and/or color.
Protostar!
The core of a star contracts under the force of its own gravity. This contraction increases the temperature in the core.
The young star stage because at that stage, stars are just burning, no interruptions or disturbances
Altair is still in the main sequence stage of a stars life. See related link for more information.
it doesn't.......
Formation of the star out of a giant cloud of gas and dust.
White Dwarf then Black Dwarf=Dead Star