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The James Webb Space Telescope (JWST) has recently uncovered a newrecord-breaking quasar, UHZ1, at a redshift of $z\sim10$. This discoverycontinues JWST's trend of confronting the expectations from the standard$\Lambda$CDM model of cosmology with challenges. Namely, too many very massivegalaxies and quasars have been observed at very high redshifts, when theuniverse was only a few hundred million years old. We have previously shownthat Supermassive Dark Stars (SMDSs) may offer a solution to this puzzle. Thesefascinating objects would be the first stars in the universe, growing to be$\sim 10^5-10^7 M_{\odot}$ and shining as bright as $10^9$ suns. UnlikePopulation III stars (the major alternative proposed model for the first starsin the universe, which would also have zero metallicity and would be powered bynuclear fusion), SMDSs would be powered by dark matter heating (e.g. darkmatter annihilation) and would be comparatively cooler. At the ends of theirlives (when they run out of dark matter fuel), SMDSs would directly collapseinto black holes, thus providing possible seeds for the first quasars. Previouspapers have shown that to form at $z\sim10$, UHZ1 would require an incrediblymassive seed ($\sim 10^4 -10^5 M_{\odot}$), which was assumed to be a DirectCollapse Black Hole (DCBH). In this paper, we demonstrate that SupermassiveDark Stars (SMDSs) offer an equally valid solution to the mystery of the firstquasars, by examining the four most distant known quasars: UHZ1, J0313-1806,J1342+0928, and J1007+2115, with particular emphasis on UHZ1.

UHZ1 and the other three most distant quasars observed: possible evidence for Supermassive Dark Stars