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 ...

An artist's impression of the star's journey from the Large Magellanic Cloud to the Milky Way. (Navid Marvi/Carnegie Science) ...

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, ...

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.

Researchers propose that hydrogen gas from the early Universe emitted detectable radio waves influenced by dark matter. Studying these signals, especially from the Moon’s radio-quiet environment, ...