A G-type Main-Sequence Star, often referred to as a G dwarf star, is a type of star that falls within the spectral class G. These stars have surface temperatures ranging from about 5,300 to 6,000 degrees Celsius. They are known for their yellowish color and are typically stable, burning hydrogen in their cores through nuclear fusion. Our own Sun is a prime example of a G-type Main-Sequence Star. G-type stars are important in the study of stellar evolution and the potential for habitable zones around them. They usually have a lifespan of around 10 billion years, allowing ample time for planetary systems to develop. Many exoplanets have been discovered orbiting G-type stars, making them key targets in the search for extraterrestrial life.