Massive stars have a mass 3x times that of the Sun. The contracting cloud is then called a protostar. Stage 1 - Massive stars evolve in a simlar way to a small stars until it reaces its main sequence stage (see small stars, stages 1-4).The stars shine steadily until the hydrogen has fused to form helium ( it takes billions of years in a small star… There are many types of stars -- many stages in a star's life. Red giant The forth stage in a low mass star's life, after the star has used up all it's hydrogen, it starts to cool and expand in an effort to start fusing helium atoms. A giant star starts its life innocently, when gas and dust buckle under an assertive gravitational pull to form a baby star. Explains the supernova stage of a massive star's life cycle to middle school students and above. Gravity can pull some of the gas and dust in a nebula together. For students in middle … A red giant star is a dying star in the last stages of stellar evolution. Life Cycle of a Star — A STAR IS BORN - Worksheet Name: STAGES COMMON TO ALL STARS All stars start as a nebula. Stars similar to our Sun will have a different fate than massive and supermassive stars. The star is coloured red because the surface is cooler than it's former temperature. All stars will eventually come to their end, but what the star’s life cycle looks like depends on the size and mass of the nebula at the start of the star’s life. Temperature: Rigel is estimated to have surface temperatures of around 12,000C (22,000F), more than twice as hot as the Sun.Colour:White Brightness/ … For this, they should focus on the life cycle of stars with a mass similar to that of our Sun. 90% opf a star's life is in this stage. The star is only 10 million years old, compared to the sun's 4.5 billionWhich part of the life cycle is the star in currently:Rigel is on the main sequence stage of its life. The diagram below shows the life cycles of stars that are: Levy, David H., A Nature Company Guide: Skywatching, 1995, Time-Life Books. This book provides a general overview and discussion of astronomical objects, including the life cycle of stars. Stage Four: The hydrogen begins to run out and the stars grows into a red giant. Some are 50x that of the Sun. Massive Stars - The Life of a Star of about 10 Solar Masses. In this activity, students will narrate the stages in a star's life. The life cycles of stars depend on their mass. the third stage in every stars life, the star is in it's middle age, around 6 billion years old. A star will go through a life-cycle where they move from one type to another. The formation and life cycle of stars. In only a few billion years, our Sun will turn into a red giant. A protostar is the earliest stage of a star's life. This growth phase can take up to 50 million years, followed by another 10 billion years of shiny adulthood. 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