Learn about a new observation of a galaxy emitting ultraviolet light that broke through the early universe's dense fog.

Astronomers have uncovered a spiral galaxy nearly a billion light-years away that hosts a supermassive black hole launching ...

The universe is thought to have experienced a rapid and exponential expansion in a fraction of a second after the Big Bang.

After more than a decade of mapping the stars, the European spacecraft was shut down on Thursday. But its legacy lives on.