Cosmic Dawn

Cosmic Dawn refers to the era when the first stars and galaxies formed in the universe, approximately 100 to 200 million years after the Big Bang. During this period, the universe transitioned from an dark, empty state to one filled with light and structure. These early celestial objects began illuminating the cosmos, ending the "cosmic dark ages," and laid the groundwork for the universe's ongoing evolution. Understanding Cosmic Dawn helps astronomers learn how the universe's earliest structures emerged and how they influenced subsequent galaxy formation.