The star is now on a stage of its life called the main sequences phase and is thus called a main sequence star. The next life cycle stage depends on the size of the main sequence star. Astronomers sort stars in a series of "bins" using these characteristics: temperature, mass, chemical composition, and so on. The time frame in the life cycle of stars is entirely different from the life cycle of a living being, lasting in the order of billions of years.

The color of a star depends on how hot it is. The time a star spends on the main sequence stage depends on its mass. The star gradually contracts over billions of years to compensate for the heat and light energy lost.

Eventually, a main sequence star burns through the hydrogen in its core, reaching the end of its life cycle. While on the main sequence, a star fuses hydrogen into helium, and it continues to do so until its hydrogen fuel runs out. This version of the Hertzprung-Russell diagram plots the temperatures of stars against their luminosities. Life of a star. The star is now on a stage of its life called the main sequences phase and is thus called a main sequence star. This section covers the main stages of a star's life, from infancy to old age. Based on its temperature, brightness (luminosity), mass, and chemistry, the Sun is classified as a middle-aged star that is in a period of its life called the "main sequence". As energy is formed pressure builds up inside the protostar. In this stage of life, a star glows just like our sun. Once achieving nuclear fusion, stars radiate (shine) energy into space. Red giant. Learn about and revise the life cycle of stars, main sequence stars and supernovae with GCSE Bitesize Physics. Life Cycle Of A Star. The main sequence phase of a star's life cycle is that time during which hydrogen fusion takes place in its core. Small Star Life Cycle: Main Sequence Most of the stars in the night sky are main sequence stars, because this period is the longest by far in the life span of any star. The Main Sequence: The Sun, like most stars in the Universe, is on the main sequence stage of its life, during … the third stage in every stars life, the star is in it's middle age, around 6 billion years old. At this point, it leaves the main sequence. The Main Sequence. Based on its temperature, brightness (luminosity), mass, and chemistry, the Sun is classified as a middle-aged star that is in a period of its life called the "main sequence". What happens to smaller stars, like the sun, is much different than what happens to large stars. Massive stars have a mass 3x times that of the Sun. Learners will also discover why stars do not all look the same and why they evolve at different rates and have different lifetimes: it is a consequence of having different masses. to find out about Star Death. Stars live out a lot of their lives in a phase termed as the Main Sequence. Main sequence star.