New computer simulations suggest the first magnetic fields that emerged after the Big Bang were much weaker than expected — ...

Astronomers once thought the universe's first stars (made of hydrogen and helium) were nearly all giants, hundreds to ...

Astronomers have discovered "dust-shrouded supermassive black holes" in the early universe, less than 1 billion years after ...

Nowadays, the dark of night is interspersed with the light of stars. But before the stars were born, did light shine at the beginning of the universe? The short answer is "no." But the long answer ...

After about 380,000 years, the universe was sufficiently cool for those protons and neutrons to grab free-flying electrons and form the first electrically neutral atoms.

There were two periods of exponential expansion in the Universe: one today, dark energy, and one long ago, inflation. Are they related?

Beginning in the mid-2010s, we were able to detect their imprint on first the photons of the CMB and, a few years later, on the large-scale structure that would later grow in the Universe.

Chinese astronomers have spotted a hidden supermassive black hole in the background of a peculiar gravitational wave event ...

For the first time, our universe began shining with a light other than the afterglow of the Big Bang. Timeline of the universe. NASA, CC BY Leading up to our Cosmic Dawn, the entire universe was ...