The Universe’s First Light Could Reveal Secrets of the Cosmic Dawn

Scientists are studying the cosmic dark ages and dawn, periods before the first stars and galaxies formed. New experiments aim to detect faint radio signals from ancient hydrogen atoms, revealing how the early universe evolved.

Researchers use radio telescopes and lunar missions to search for 21-cm wavelength emissions from primordial hydrogen. These signals could provide insights into early star and galaxy formation, helping map the universe's earliest structures. Recent observations have raised questions about cosmic event timelines, prompting further investigation.