The James Webb Space Telescope (JWST) has provided new data that has shed light on this cosmic mystery. The JWST is able to detect the faint light emitted by the earliest stars and galaxies, allowing astronomers to study the universe as it was more than 13 billion years ago.

The new data from JWST suggests that the first stars and galaxies formed much earlier than previously thought, around 250 million years after the Big Bang. These early stars and galaxies produced intense radiation that filled the universe and eventually cleared the fog of hydrogen gas that had been blocking the light. This process is known as reionization, and it is considered to have marked the end of the dark ages and the beginning of the era of visible light in the universe.

The JWST data has also provided new insights into the nature of the first stars and galaxies. These early galaxies were much smaller and more chaotic than galaxies today, and they were constantly merging and evolving. The stars within these galaxies were also very different from the stars we see today, and they were much hotter and brighter.

The new data from JWST is a major breakthrough in our understanding of the early universe. By studying the first stars and galaxies, astronomers are able to learn more about the origins of the universe and how it has evolved over time.