Cosmic Dawnhd 〈macOS HOT〉

Approximately 180 million years after the Big Bang, the first stars (known as Population III stars) began to shine.

The refers to the pivotal era in our universe's history—between 50 million and one billion years after the Big Bang—when the very first stars, galaxies, and black holes began to form. This period marked the transition from a cold, dark, and neutral universe to one that was illuminated and ionized by the light of early celestial bodies. Key Milestones and Discovery Cosmic DawnHD

Scientists use advanced observatories to peer back in time and witness this era: The Cosmic Dawn and Epoch of Reionisation with SKA Approximately 180 million years after the Big Bang,

Before the Cosmic Dawn, the universe was filled with neutral hydrogen gas and lacked any light-emitting sources. Cosmic DawnHD

As these first stars radiated light, they heated and ionized the surrounding hydrogen gas, a process that concluded roughly 1.1 billion years after the Big Bang. 🔭 Tools for Exploration