新研究发布宇宙天体“衰亡”时间表

Core Insights - A new study from Radboud University reveals that the last batch of stars in the universe will completely "fade away" in 1,078 years, significantly shorter than the previous estimate of 101,100 years [1][2] - The research is based on Hawking radiation, a revolutionary theory proposed by Stephen Hawking in the 1970s, which suggests that black holes emit radiation and are not just "consuming" entities [1] - The study has been published in the latest issue of the journal "Cosmology and Astroparticle Physics" [1] Summary by Categories Research Findings - The study indicates that white dwarfs will evaporate in 1,078 years when considering Hawking-like radiation effects, a drastic reduction from the earlier estimate of 101,100 years [1] - Neutron stars and stellar black holes have the same evaporation time of 10^67 years, which was unexpected as black holes are generally thought to evaporate faster due to their stronger gravity [2] - The research team explains that black holes have no surface, allowing some radiation to be reabsorbed, which slows down the Hawking radiation process, while neutron stars have a solid surface that allows radiation to escape more efficiently [2] Additional Calculations - The team calculated the evaporation timelines for various cosmic bodies: the Moon will take approximately 3×10^89 years, supermassive black holes will take 10^96 years, interstellar clouds will take 10^127 years, and dark matter halos of superclusters will take 10^135 years [2]