However, although photons of light existed since the first second after the Big Bang, they could not yet shine across the universe. This is because the early cosmos was so hot that "electrons were ...

The team's results suggest that the mysterious glow named QSO1 is a black hole with a mass equivalent to 50 million Suns. If ...

Astronomers using the James Webb Space Telescope (JWST) may have detected what could be the oldest galaxy ever observed, ...

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

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

What happened before the Big Bang? And what happened before that? Stephen Hawking's answer—there was no beginning—is now the subject of intense debate.

The beginning of the cosmos is cloaked and hidden from the view of our most powerful telescopes. Yet observations we make today can give clues to the universe’s origin.

Images taken with the MIRI infrared camera on the James Webb Space Telescope (JWST) have made it possible to observe the ...

This story comes from our special January 2021 issue, “The Beginning and the End of the Universe.” Click here to purchase the full issue. From a dark site on a clear winter night, the sky in ...

In the beginning, there was … well, maybe there was no beginning. Perhaps our universe has always existed — and a new theory of quantum gravity reveals how that could work. "Reality has so many things ...

This story comes from our special January 2021 issue, “The Beginning and the End of the Universe.” Click here to purchase the full issue. Some 4.6 billion years ago, our Sun was born from a ...