* 10 million to 40 million degrees Kelvin (K) for stars like our Sun.
* Tens of millions to hundreds of millions of Kelvin for larger, more massive stars.
Here's why:
* Nuclear Fusion: The core of a star is where nuclear fusion takes place. This process involves the fusing of atomic nuclei, which releases immense amounts of energy and heat.
* Gravitational Pressure: The enormous mass of a star creates immense pressure in its core, which further contributes to the high temperatures.
* Star Size and Mass: Larger, more massive stars have stronger gravitational forces, leading to higher core temperatures.
Note: These are just approximate ranges. The actual core temperature of a star can vary significantly depending on its specific characteristics.
