A "G Dwarf" is a type of star classified as a G-type main-sequence star. These stars are characterized by their yellowish color and moderate surface temperatures, typically ranging from 5,300 to 6,000 degrees Celsius. They are similar to our Sun, which is also a G Dwarf, and they play a crucial role in the formation of planetary systems. G Dwarfs are often found in the Milky Way galaxy and can have lifespans of around 10 billion years. They fuse hydrogen into helium in their cores, providing a stable energy source. This stability allows for the potential development of life on orbiting planets, making G Dwarfs important in the search for extraterrestrial life.