The history of the universe always feels hard to fathom. After the Big Bang, it is believed that the universe was filled with hot gas and light. Eventually, matter started to cool down, and the first ...

Scientists have recreated the first molecule ever to form and found that it likely played a much bigger role in the birth of early stars than previously thought. It then took another 380,000 years for ...

Add Yahoo as a preferred source to see more of our stories on Google. The universe’s first molecule just surprised us again. In a discovery that could rewrite our understanding of how the first stars ...

Understanding how the universe transitioned from darkness to light with the formation of the first stars and galaxies is a key turning point in the universe's development, known as the Cosmic Dawn.

About 13.8 billion years ago, the newborn universe was a blazing sea of energy and particles. Within minutes of the Big Bang, conditions had cooled enough for the very first atoms—mostly hydrogen, ...