In physical cosmology, Big Bang nucleosynthesis (or primordial nucleosynthesis) refers to the production of nuclei other than H-1, the normal, light hydrogen, during the early phases of the ...

When our universe was less than 20 minutes old, those particles began to assemble themselves into the first protons and neutrons during what we call Big Bang Nucleosynthesis. Big Bang ...

This is a trigger for the process called Big Bang nucleosynthesis (BBN). This is when the first atomic nuclei—the dense lumps of matter made of protons and neutrons and found at the centers of ...

Nucleosynthesis began three minutes after the Big Bang. For the next 17 minutes, all was fusion. At 20 minutes after the Big Bang, that fusion ceased, but because it was still so hot that most ...

These four facts: the Hubble expansion of the Universe, the existence and properties of the CMB, the abundance of the light elements from Big Bang nucleosynthesis, and the formation and growth of ...

Their measurement of the reaction rate, published on November 11 in Nature, nails down the most uncertain factor in a sequence of steps known as Big Bang nucleosynthesis that forged the universe ...

Abstract: Professor Hal describes the Big Bang, introduces us to the main actors who discovered the evidence for it and expands upon the evidence for it. He explains where the elements come from and ...

according to Big Bang nucleosynthesis. Extrapolation of the expansion of the universe backwards in time using general relativity yields an infinite density and temperature at a finite time in the ...

These were formed during the era of Big Bang Nucleosynthesis (BBN) in the first few minutes after the Big Bang. Their abundances show that the universe was really hot and really dense in the past ...

The Big Bang may have not been alone. The appearance of all the particles and radiation in the universe may have been joined by another Big Bang that flooded our universe with dark matter particles.