Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to ...

Did light shine in the universe’s earliest moments, or was it hidden from view? While this question may seem simple at first, ...

There is no specific measure of the temperature of the Universe as a whole as it began, but at 10⁻³⁶ seconds after the Big Bang, it had cooled to just 10²⁸ Kelvin.

On May 20, 1964, on a hilltop in New Jersey, an unlikely little structure called the Holmdel Horn revealed telltale signs of the Big Bang, and the birth of the universe we live in.

In the search to understand how the universe came to be, a new theory is rewriting the script. Instead of one massive, fiery birth like the Big Bang, this idea suggests the cosmos has been growing ...

What can we learn about the Big Bang from the ... Jefferson National Accelerator Facility has given the world a winking reminder that there's more to the music of our universe's birth — and ...

In the study, the researchers used JWST to look at 12 known early galaxies dating to no more than 600 million years after the Big Bang. Back then, our now 13.8 billion-year-old universe was about ...

At the Big Bang, distances and volumes drop to zero, all parts of the universe fall on top of each other and the energy density of the universe becomes infinite.

This afterglow—the "cosmic microwave background" (CMB), the relic radiation left behind by the Big Bang—has given astronomers insights into the birth of the universe and helped shape the ...