G-type main-sequence stars
G-type main-sequence stars, often referred to as G dwarfs, are a category of stars that are primarily composed of hydrogen and helium. They are characterized by their yellowish color and moderate surface temperatures, typically ranging from about 5,300 to 6,000 Kelvin. The most well-known example of a G-type main-sequence star is our own Sun.
These stars generate energy through nuclear fusion, converting hydrogen into helium in their cores. G-type main-sequence stars have a lifespan of around 10 billion years, during which they maintain a stable phase of burning hydrogen. After exhausting their hydrogen supply, they will eventually evolve into red giants before ending their life cycle as white dwarfs.