Humans will never know that. The universe expanded rapidly during inflation and expands at a more or less constant rate now.

Matt Davis. ments.

WHERE DID ALL THE ELEMENTS COME FROM?? The sites of nuclear creation of some elements, such as copper, are not really well known and are continuing topics of observational and … In stars more massive than the sun but less massive than about eight solar masses, further reactions that convert helium to carbon and oxygen take place in successive stages before such stars explode.

In stars less massive than the sun, the reaction converting hydrogen into helium is the only one that takes place. Next, we have 3 elements under the category of “Cosmic Rays:” lithium, berylium, and boron. Where elements come from: this periodic table explains it all An altered periodic table that shows how each elements was forged. Where Do Chemical Elements Come From?

Where do all the elements come from? The featured periodic table is color coded to indicate humanity's best guess as to the nuclear origin of all known elements. Elements like phosphorus and copper are present in our bodies in only small amounts but are essential to the functioning of all known life.

In the very beginning, both space and time were created in the Big Bang. 09 April, 2019. This video is not about the stages of star's death.

It happened 13.7 billion years ago. Where do those fundamental particles, and their even more fundamental particles come from?

By Carolyn Ruth. As it grows, it cools. It's often said that every element was made in a star, but there's more to it than that.

NASA.

Afterwards, the universe was a very hot, expanding soup of fundamental particles. To get all the core elements of life in the right abundances, for example, plus rock-building elements — magnesium (Mg), silicon (Si), and iron (Fe) — it took billions upon billions of years. This video explains how dying stars explode into super nova spewing elements that provide the Universe with vital ingredients for life. No one knows, because it would require knowing exactly how the universe began, and where all matter in it originated from.

The carbon in your body was made by nuclear fusion in the interior of stars, as was the oxygen.