What are stars composed of?

Answer 1

Stars are composed primarily of hydrogen and helium. These are the two lightest and most abundant elements in the universe. Hydrogen makes up about 74% of the mass of an average star, while helium accounts for around 24%. The remaining 2% consists of trace amounts of heavier elements such as carbon, nitrogen, oxygen, and others. These elements play a crucial role in the processes that occur within stars, including nuclear fusion, which powers the star and enables it to generate heat and light.