* Nebulae: These are vast clouds of gas and dust in space. They are the birthplace of stars.
* Gravity: Gravity pulls particles in a nebula closer together.
* Accretion: As particles collide and clump together, they grow in size. This process is called accretion.
* Protostar: As the clump grows, it becomes a protostar – a hot, dense core of gas.
* Nuclear Fusion: When the protostar becomes massive and hot enough, nuclear fusion begins in its core. This is the process where hydrogen atoms fuse to form helium, releasing enormous amounts of energy.
* Star Birth: The energy from nuclear fusion creates outward pressure that balances the inward pull of gravity, creating a stable star.
So, in short, nebulae particles joining through gravity and accretion lead to the formation of stars!