Main Sequence Stars - Tau Ceti. If protostars accumulate sufficient mass as they develop, collapsing gas and dust may reach temperatures where hydrogen fuses into helium. Once hydrogen fusion occurs, stars become stable between the competing forces of fusion and gravity and are considered main sequence stars. Both our Sun and Tau Ceti are currenthy in this stage (both are considered yellow dwarf stars). For most stars, the main sequence staoe lasts the longest (with the amount of mass inversely proportional to how fast the star burns Which type of star will have the longer main sequence stage, and therefore, "live the longest? a. high-mass star (greater than 8x the mass of our Sun) b. intermediate- to low-mass stars (between 0.8x to 8x the mass of our Sun)
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Main Sequence Stars - Tau Ceti. If protostars accumulate sufficient mass as they develop, collapsing...
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