Everything that God created in this life is a life cycle that begins with a young man and then a strong young man. Then this age of life and this cycle of life must come to man and other living things and even to the stars, but the difference remains. To the age of aging and death, which amounts to millions or billions of years, so how does the star be born? How and when to die? Astronomers point out that the star goes through four stages in its life cycle and is divided into the stage of the first star, the beginning of its birth and appearance, then reaches adulthood followed by the red-link stage, and then reaches its final stage, the stage of death. These stages are: First star stage: The gases and dust present in space accumulate in a very low temperature and then by self-attraction, the nebula begins to shrink and get close to each other. Hydrogen gas forms the majority of that nebula and is the reason for the lighter elements. The rotational motion begins around the center of the mass very quickly, resulting in the collision of the particles and the minutes present in the nebula, creating a very warm family that is heating the nebula until it reaches 15 million degrees Celsius. The nuclear fusion of the hydrogen atoms begins, This is called "the first star" puberty: At this stage, the mass begins to rise from the stage of the first star based on the substance of the nebula. When the mass is stabilized, the star has completed the stage of reaching adulthood. The star can reach this stage is equal to two factors: the power of internal attraction to the inside, and the strength of thermal pressure to the outside. Aging (Red Giant): When the star reaches adulthood it begins to glow and supply space to light for millions of years or even billions of years. During this phase, hydrogen turns into helium, causing instability of the star, and the internal self-pull force overcomes the power of the heat pressure causing the star to shrink. It is called the red giant because the outer layers of the star, which are made up of the atoms of the hydrogen element, expand and cool and appear red. The giant color appears red because it is colder than the initial star, and its size is very large because the outer layers are stretched. Death stage: Which is the last stages of the life and existence of the star, which means that it has exhausted all of its nuclear fuel and energy production, and this stage is the stage that varies from star to another and take different paths depending on the size of the star, which is as follows: a. Small or medium-sized stars are the stars of their mass when they reach less than 1.4 times the mass of the sun. In these stars hydrogen atoms are merged into helium atoms that raise the star's temperature to 200 million degrees Celsius. Helium also incorporates a component of carbon atoms. When all the atoms are converted to carbon, the star reaches the stage of death and the gravity turns the star into a white dwarf, Very bright and white. As for its density, it reaches 64 tons / cm3 while the density of the earth is 5.5 g / cm 3. B. Large stars: If the mass of the star during puberty is between 1.4-3 times the mass of the sun, and in these stars, the force of contraction is very large lead to reduce the size to a very small size smaller than the size of the white dwarf and very intense intensity, and then the installation of corn is lost and electrons clutched protons Neutron is also called a "neutron star.