"Dwarf Galaxies' Impact on Early Universe Unveiled by James Webb Space Telescope"

The James Webb Space Telescope has used gravitational lensing to discover that small galaxies in the early universe played a crucial role in shaping the cosmos, outnumbering larger galaxies and supplying the energy needed for cosmic reionization. These dwarf galaxies, resembling those existing today, were found to be four times more efficient at producing ionizing radiation than expected, challenging previous theories about the sources of this radiation. The telescope's findings could help understand the formation of the very first galaxies and were published in the journal Nature.