That is the Universe in a nutshell. A few hundred million years after the Big Bang, the first stars and galaxies condensed out of immense clouds of gas. Exactly when is a subject of intense research, ...

Astronomers have found early evidence of the Universe’s transformation from a foggy, opaque state to a transparent one, ...

GS-z13-1, marks the earliest sign yet spotted of the era of cosmic reionization at 330 million years after the Big Bang.