A G-Type Main Sequence Star is a type of star that falls within the spectral class G. These stars are characterized by their yellowish color and surface temperatures ranging from about 5,300 to 6,000 degrees Celsius. They fuse hydrogen into helium in their cores, a process that generates energy and allows them to shine brightly. Our Sun is a well-known example of a G-type star. G-type stars typically have a lifespan of around 10 billion years. They are often found in various stages of stellar evolution, and their size ranges from about 0.95 to 1.2 times the mass of the Sun. As they age, they will eventually evolve into red giants before ending their life cycle as white dwarfs.