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Revised Calculations Drastically Shorten Universe’s Lifespan

Radboud University researchers reveal that Hawking-like radiation will dissolve the last stellar remnants in 10^78 years, far earlier than prior estimates of 10^1100 years.

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Conceptual image depicting end of the universe by generative AI (© The 2R Artificiality - stock.adobe.com)

Overview

  • The study extends Stephen Hawking's radiation theory to all gravitational bodies, showing that objects like neutron stars and white dwarfs also evaporate over time.
  • White dwarf stars, previously thought to last 10^1100 years, are now calculated to decay in 10^78 years due to Hawking-like radiation.
  • Neutron stars and stellar black holes, despite differing gravitational strengths, are found to evaporate at the same rate over approximately 10^67 years.
  • The evaporation timeline depends solely on an object's density, challenging prior assumptions about the role of gravitational strength.
  • Published in the Journal of Cosmology and Astroparticle Physics, the findings reshape our understanding of cosmic evolution and the universe's ultimate fate.