3 ms·
When plotted that way, it is indeed strange that the trend in density of large-scale structures (from Sun up to superclusters) is heading towards an intersectio
by lainga 3y ago
When plotted that way, it is indeed strange that the trend in density of large-scale structures (from Sun up to superclusters) is heading towards an intersection with the "black holes" line (Schwarzschild radius?)
- dvh 3y agoIt's even stranger that when you calculate Schwarzschild radius for the mass of the universe, it is roughly the radius of the observable universe (1e53kg --> 15 billion ly)
- beefman 3y agoThe 1e53 kg estimate is based on the observable universe (radius 46 Gly) being flat, and ordinary matter being 4.8% of what's keeping it flat.[1] Is it meaningful that just this baryonic matter has a Schwarzschild radius near that of the Hubble (14.5 Gly) and Cosmic Event (16.7 Gly) horizons?[2][3] Then there's the question of how much baryonic matter we actually see...[4] [1] https://en.wikipedia.org/wiki/Observable_universe#Estimates_based_on_critical_density https://en.wikipedia.org/wiki/Observable_universe#Estimates_... [2] https://en.wikipedia.org/wiki/Cosmological_horizon https://en.wikipedia.org/wiki/Cosmological_horizon [3] https://physics.stackexchange.com/questions/60519/can-space-expand-with-unlimited-speed/63780#63780 https://physics.stackexchange.com/questions/60519/can-space-... [4] https://en.wikipedia.org/wiki/Missing_baryon_problem https://en.wikipedia.org/wiki/Missing_baryon_problem