Stars spend about 90% of their lifetimes fusing hydrogen into helium in higher-temperature-and-stress reactions within their cores. This sort of stars are mentioned to get on the principle sequence and so are identified as dwarf stars. cost-free!|This process releases Vitality that traverses the star's interior and radiates into outer space. https://dominick517q2.blogdon.net/what-does-star-mean-42845295