Interactive Stellar EvolutionBirth of a StarDrag the slider to compress the gas cloud using gravity and ignite nuclear fusion!⬇ Gravity Pulls In ⬇⬆ Fusion Pushes Out ⬆Passage of Time ⏳ Nebula StageStage 1 of 3☁️ Nebula (The Nursery)Main Composition Hydrogen GasCore Temp Cold (-200°C)A giant cloud of gas and dust floating in space. Gravity slowly starts pulling the gas together.Action: Slide right to let gravity compress the cloud.💡 UPSC Logic: Stars do not burn like wood. Their energy comes from Nuclear Fusion inside the core.