Astronomers have long been puzzled by two strange phenomena at the heart of our galaxy. First, the gas in the central ...

"Unlike any other similarly distant galaxy, it shows a very clear ... that this period is called the Cosmic Dark Ages. Over time, sufficiently energetic ultraviolet radiation from the first stars and ...

Despite decades of searching for this signal, astronomers have yet to find it. The problem is that our Earth is too noisy, making it nearly impossible to capture this whisper. The solution is to go to ...

It drives the movements of stars and galaxies, but dark matter is invisible. While it remains a colossal mystery, a study ...

Primordial black holes could inhabit the modern-day cosmos, making them responsible for the phenomenon of dark matter, ...

Scientists using the James Webb Space Telescope have identified an ancient and faraway galaxy that provides evidence that an important transition period that brought the early universe out of its ...

The galaxy marks a transition between the cosmic dark ages and a mysterious phase known as "cosmic reionisation" when light from the earliest stars lit up the Universe. Further observations of ...

The oldest naked eye star yet found still provides stellar theorists with key data on the earliest epochs of our Milky Way.