Here's a breakdown:
* Nebula: It all begins with a giant cloud of gas and dust called a nebula.
* Gravitational Collapse: Within the nebula, a region of denser material begins to collapse under its own gravity. This collapse is driven by the mutual attraction of particles within the cloud.
* Protostar Formation: As the collapse continues, the core heats up and the material starts to rotate faster. This forms a spinning, hot, dense core called a protostar.
* Accretion: The protostar continues to gather more material from the surrounding nebula.
* Fusion Ignition: Eventually, the core of the protostar becomes so dense and hot that nuclear fusion begins. This is when hydrogen atoms fuse to form helium, releasing enormous amounts of energy.
Once fusion starts, the protostar officially becomes a star.
