"Dwarf Galaxies: Illuminating the Early Universe with JWST"

The James Webb Space Telescope (JWST) has revealed a multitude of galaxies in a small patch of space, shedding light on cosmic evolution and the reionization of the Universe. Gravitational lensing has unveiled the presence of eight tiny, faint, distant dwarf galaxies, which are producing four times as many ionizing photons as previously assumed, suggesting that these cosmic dwarfs, not quasars or bright galaxies, primarily reionized the Universe. This challenges previous assumptions and provides new insights into the early history of the cosmos.