G-type main-sequence star
A GV star fuses hydrogen nuclei together and release energy for around 10 billion years. After the hydrogen is used up, the star will grow to many times its earlier size and become a red giant like  Aldebaran. Eventually the red giant will lose its outer layers of gas, which will become a planetary nebula, while the inside of the star (also known as the core) will cool and shrink into a small, very dense white dwarf.