* Kärnfusion: Stars are giant balls of hot gas, primarily hydrogen and helium. In their cores, the intense pressure and heat cause hydrogen atoms to fuse together to form helium. This process releases a tremendous amount of energy, including light and heat.
* Energikonvertering: This energy release is what makes stars shine. The fusion process converts some of the mass of the hydrogen atoms into pure energy, according to Einstein's famous equation E=mc².
* elektromagnetisk strålning: The energy released during fusion is in the form of electromagnetic radiation, which includes light, heat, and other forms of radiation.
Sammanfattningsvis: The light we see from stars is the result of the ongoing nuclear fusion reactions in their cores. Denna process frigör enorma mängder energi, en liten del reser till jorden som ljus, vilket gör att stjärnor verkar ljusa på natthimlen.
