Stars, fusion, and balance
Stars, fusion, and balance
A star is a huge sphere of hot gas that shines because nuclear fusion happens in its core. Fusion joins light nuclei and releases the energy that eventually leaves the star as light and heat.
Step-by-step lessons on Edexcel IGCSE Physics Stellar evolution. Each one builds up to exam-style questions. Build a strong foundation in mechanics and electricity before tackling the more mathematically demanding astrophysics and nuclear topics.