what is the longest cycle in the life of star
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Life Cycle of Stars The star is now on a stage of its life called the main sequences phase and is thus called a main sequence star. This is the longest phase of the star’s life and all the energy the star emits comes from the nuclear conversion of hydrogen to helium in its core.
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Which size of star has the longest life span Which size of star has the longest life span In a triangle, the perimeter is 121 feet, the shortest side is 15 feet longer than one-half of the longest side, the second longest side is 4 feet shorterthan the longest side
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What is the expected life span of a motherboard? The life span of the sun is 10 - 12 billion years and it is now 4.6 billion years old which makes the sun middle aged. The size of the star is not as important as to the … class of the star. A star like the sun which is a Gv2 class, yellow dwarf has a life span of about 10 billion years.
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Post-Main Sequence Stars Whilst a massive star may spend a few million years on the main sequence, its helium core-burning phase may be a few hundred thousand years. The carbon burning phase lasts a few hundred years, neon-burning phase a year, oxygen-burning half a year and the silicon-burning only a day.
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- Yet, it would be a mistake to conclude that the stars are eternal. Through observations, we have learned that stars have a kind of life cycle of their own, one that is vastly longer than a human lifetime, or even the existence of whole civilizations.
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- 1 These stars are in the most stable part of their existence; this stage generally lasts for about 5 billion years. 2  As stars begin to die, they become giants and supergiants (above the main sequence). 3  These stars have depleted their hydrogen supply and are very old. 4  The core contracts as the outer layers expand.
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Red Dwarfs: The fascinating stars that live for trillions of years So long is the process, in fact, that the lifespan of a red dwarf can be far longer than the expected age of the universe, thought to be about 14 billion years. More massive stars burn through their fuel much faster and thus have shorter lifespans, sometimes just a few million years, so the lower the mass of a red dwarf the longer it will live. A red dwarf with a tenth of the Sun’s mass will continue burning fuel for 10 trillion years.
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- Generally stars spend most of their active lives travelling through the stage of stellar life-cycle known as the Main Sequence. I say 'active' life because the remnants of dead stars can persist more or less indefinitely, slowly fading into obscurity. I say 'generally' because even dead stars sometimes find ways to obtain new life
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What is the average life span of a star? All the first 4 answers are correct. Unlike a bonfire, and contrary to intuition, the bigger a star, the shorter the life. In the case of a red dwarf, the star may glow for as long as 10^14 years.That's 10 000 times the present age of the universe. A brown dwarf will be warmer than the background radiation in space for even longer. Right now the background radiation temperature is 2.7K.ll the first 4 answers are correct. Unlike a bonfire, and contrary to intuition, the bigger a star, the shorter the life. In the case of a red dwarf, the star may glow for as long as 10^14 years.
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Stars that have the shortest lifespan, and stars that have the longest? Best Answer: A star's lifespan is determined almost entirely by its mass. The more massive a star is, the hotter it burns, the brighter and bluer it is, and the shorter its lifespan. The logest-lived stars are the least massive, which are also the dimmest. The most massive stars (OB stars) have the shortest life. K and M stars are the least massive and have the longest lives. The more massive a star is the shorter it's life as it will burn its fuel up at a greater rate. McGarnigle is the most correct here. Type O and B are the hottest, most massive stars and, by virtue of their extreme mass, are the shortest lived.
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- Stars are gigantic spheres of extremely hot gases, powered by thermonuclear reactions that release an immense amount of energy. The sun in our solar system is a star and is one of many billions of stars in the universe. The life of a star involves 4 main evolutionary stages: 1  Protostar.  Pre-main Sequence Star.
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- Blue Giant Stars. 1  Lifetime: 3 - 4,000 million years. 2  Evolution: early, middle. 3  Temperature: 7,300 - 200,000 °C. 4  Spectral Types: O, B, A. 5  Luminosity: 5.0 - 9,000,000. 6  Radius: 1.4 - 250. 7  Mass: 1.4 - 265. 8  Prevalence: 0.7%.
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- The life span of a star and its final state are determined by the mass of the star. All stars, as far as we know, are under two basic forces, that of gravity and that of the internal pressure formed by the fusion of hydrogen into helium.
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TEACHERâS GUIDE For AEROSPACE: THE JOURNEY OF FLIGHT 14 | The Milky Way and Beyond: Stars, Nebulae, and Other Galaxies the outer layers of the star to expand. This is called the red giant stage. It can take anywhere from about a million years to hundreds of billions of years for a star to reach this stage. Eventually, due to the lack of hydro-gen, the fusion reaction begins to die down.
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- Our Sun is continually growing. About three billion years from now, our Sun will be 40% larger than its current state and all life on Earth will probably cease to exist. The greater a star's mass, the shorter its lifecycle. High-mass stars live for one million to tens of millions of years.
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Main Sequence Stars Whilst our Sun will spend 10 billion years on the main sequence, a high-mass, ten solar-mass (10 M Sun) star will only last 20 million years (2.0× 10 7 years) on the main sequence. A star with a only half the mass of Sun can spend 80 billion years on the main sequence.
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Main Sequence Stars Lifespans for main sequence stars have a vast range. Whilst our Sun will spend 10 billion years on the main sequence, a high-mass, ten solar-mass (10MSun) star will only last 20 million years (2.0× 107 years) on the main sequence. A star with a only half the mass of Sun can spend 80 billion years on the main sequence.
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The Life Cycles of Stars Astronomers now realize that everything which appears to distinguish one star from another - temperature, luminosity, size, life span -- is determined almost entirely by one factor: the star s mass.
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What event marks the birth of a star and what event marks its death? Basically, stars are born most frequently during the squashing of the gas and dust as it enters a Spiral Arm of the Galaxy. A gravitational disturbance has to pass throght the Nebula. Nebulas cause the birth of stars. A supernova is the event that causes the death of a star.
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What is the life cycle of a star? 1 Low mass stars such as our Sun will be on the main sequence for several billion years. 2  High mass stars may only stay on the main sequence for a few million years. 3  Eventually a star will run out of its hydrogen fuel, and begin fusing helium and other elements instead.4  At that point it will leave the main sequence phase.he life cycle of a star can follow a few different paths depending on the mass it starts out with. Really massive stars may live for only a few million years before going supernova, while low mass stars such as the Sun may take billions of years to use up their fuel and then die relatively quietly.
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Star The star will remain in the main sequence for a long time, about 90% of its lifetime, though how long that is depends on its total mass. Very large stars tend to burn all of their gases faster than smaller, more stable stars.he star will remain in the main sequence for a long time, about 90% of its lifetime, though how long that is depends on its total mass. Very large stars tend to burn all of their gases faster than smaller, more stable stars.
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Stellar Birth and Middle Age Eventually, a protostars central temperature becomes high enough for hydrogen fusion to begin, and the protostar becomes a star. For a star like the Sun, the whole formation process takes about 50 million years. The zero-age main sequence is the main-sequence band predicted by stellar evolutionary theory.
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The Life Cycle of the Sun and of Vega Vega is only about a tenth of the age of the Sun, but since it is 2.1 times as massive its expected lifetime is also one tenth of that of the Sun; both stars are at present approaching the midpoint of their life expectancies.
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Star The duration that a star spends on the main sequence depends primarily on the amount of fuel it has to fuse and the rate at which it fuses that fuel, i.e. its initial mass and its luminosity. For the Sun, its life is estimated to be about 10 billion (10 10) years.s of 2006, the star with the highest known absolute magnitude is LBV 1806-20, with a magnitude of −14.2. This star is at least 5,000,000 times more luminous than the Sun. The least luminous stars that are currently known are located in the NGC 6397 cluster.
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Main Sequence Stars Lifespans for main sequence stars have a vast range. Whilst our Sun will spend 10 billion years on the main sequence, a high-mass, ten solar-mass (10 M Sun) star will only last 20 million years (2.0× 10 7 years) on the main sequence. A star with a only half the mass of Sun can spend 80 billion years on the main sequence.
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- The longest a star can live is 10 billion years. The sun will last for about 6 billion, it is almost in its 4th billionth year. The life of stars depend on the size of the star. The larger the star, the shorter the life. A hot supergiant will last millions of years. A cooler yellow dwarf may last billions of years. The coolest star - a red dwarf lasts, well, any created are still burning. The longest a star can live is 10 billion years.