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The Year in Physics
...unique. It singlehandedly upends notions about the young universe. Black holes were thought to have come along only after the formation of galaxies, once stars gravitationally collapsed into black holes...
Monster Neutrino Could Be a Messenger of Ancient Black Holes
...have been spikes in the density of space-time that were so high that they would have collapsed into black holes. These black holes would have spanned a range of masses,...
How Modern and Antique Technologies Reveal a Dynamic Cosmos
...region that features a binary system of mammoth yet compact objects. There, two supermassive black holes and their surrounding accretion disks are locked in a dance that will eventually merge...