Stars commit about 90% of their lifetimes fusing hydrogen into helium in high-temperature-and-stress reactions within their cores. This sort of stars are mentioned for being on the principle sequence and so are named dwarf stars. totally free!|This process releases energy that traverses the star's inside and radiates into outer House. https://trevor161z5.blog2news.com/27311788/the-ultimate-guide-to-star