Start:
* Giant Molecular Cloud: Dense, cold cloud of gas and dust
* Gravitational Collapse: Gravity pulls the cloud inward, heating the core
* Protostar: A hot, luminous ball of gas forming in the center of the cloud
* Nuclear Fusion: Hydrogen atoms fuse to form helium, releasing immense energy
Main Sequence:
* Stable Burning: Star maintains a stable equilibrium between gravity and outward pressure
* Hydrogen Fusion: Primary source of energy, fusing hydrogen to helium in the core
* Spectral Class G2V: Sun's classification based on temperature and luminosity
* Lifetime: Approximately 10 billion years for a Sun-like star
Red Giant:
* Hydrogen Depletion: Hydrogen fuel in the core is exhausted
* Shell Burning: Hydrogen fusion occurs in a shell around the core
* Core Contraction: Helium core shrinks and heats up
* Outer Layers Expansion: Star expands dramatically, becoming a red giant
Helium Burning:
* Helium Fusion: Helium atoms fuse to form carbon and oxygen
* Instability: Star becomes unstable, undergoing pulsations and mass loss
* Formation of Planetary Nebula: Outer layers are expelled, forming a glowing shell of gas
White Dwarf:
* Dense, Hot Remnant: The core of the star, mostly carbon and oxygen
* No Fusion: No longer undergoing nuclear fusion
* Cooling: Gradually cools down over billions of years
End State:
* Black Dwarf: A cold, dark, and extremely dense remnant, hypothetical state
* Possible Fate: White dwarf could eventually cool down to become a black dwarf
Connections:
* Arrows show the progression of the star's life
* Colors and sizes can be used to represent the star's temperature and size
* Labels and annotations can provide additional details and explanations
Note: This is a simplified representation. There are many complex processes and stages involved in the life of a star.
