Can a Planet Turn into a Star through Gas Accumulation?

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SUMMARY

A planet can theoretically become a star through gas accumulation if it collects sufficient hydrogen to reach the necessary mass for fusion. The minimum mass required for spontaneous fusion is approximately 10^28 kg, which is around 20 times the mass of Jupiter. If the planet's composition is rich in hydrogen, the core can ignite once this mass threshold is achieved, enabling nuclear fusion to commence.

PREREQUISITES
  • Understanding of stellar formation and nuclear fusion processes
  • Knowledge of planetary mass and composition, specifically regarding hydrogen
  • Familiarity with astrophysical concepts such as temperature and pressure in stellar environments
  • Basic grasp of gravitational forces and their role in mass accumulation
NEXT STEPS
  • Research the process of stellar nucleosynthesis and the conditions required for fusion
  • Explore the mass-radius relationship in astrophysics to understand how mass affects stellar evolution
  • Study the lifecycle of gas giants and their potential to evolve under specific conditions
  • Investigate the role of gravitational collapse in star formation
USEFUL FOR

Astronomers, astrophysicists, and students of planetary science interested in the processes of star formation and the evolution of celestial bodies.

JV
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Would it be possible for a planet by collecting gas to become a star. I mean if it were to collect enough hydrogen, the temperature and the pressure at the surface of the planet could get high enough to start fusion ?
 
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The minimum mass required for spontaneous fusion is about 10^28 Kg [around 20x the mass of Jupiter]. Assuming the composition is amenable to fusion [lots of hydrogen], the core would ignite once the former planet accumulated the necessary mass.
 

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