About Humans Are Made Of Star Dust

About Humans Are Made Of Star Dust
About Humans Are Made Of Star Dust

Over the years, scientists have popularized this fact. And, now research on 150,000 stars proves the truth. The study states that humans and the galaxy they live in share 97 percent of the same type of atom and that the elements of life are more inclined toward the galactic center.

Please note in advance that the Earth is made up of the essential elements that are called the building blocks of life: carbon, hydrogen, nitrogen, oxygen, phosphorus and sulfur. In the study, for the first time astronomers found so much of this element in most of the star samples studied, then how is the creation of this star dust?

First Generation Star

We all know that the universe began 13 to 14 billion years ago with the Big Bang. At that time most of the elements in the new universe consisted of only a few types, such as hydrogen, helium, and small amounts of lithium.

For information, elements are matter that cannot be broken down into smaller substances. We can see this from the periodic table we have studied when we were in school.

Each element is distinguished by an atomic number which describes how many protons are in the atomic nucleus. In the first generation, stars are still clumps of gas that gather and eventually explode and cause a nuclear reaction in the star's core.

This first generation of stars formed after the Big Bang and is 50 times the size of our Sun. One scientist said, the bigger a star, the faster they burn their fuel.

These first stars quickly used up their fuel to form some elements heavier than hydrogen and helium.

These stars then undergo supernovae and release the elements they produce. This is a new seed for the next generation of stars.

The new generation of stars from these seeds can produce other types of heavier elements such as carbines, magnesium, and almost all the elements we can see on the periodic table.

Regarding this star dust, the scientist again stated that, it is very possible that there are many stars that contribute elements in the solar system, on the planets, as well as elements that we find within ourselves.

Star Life Cycle

We have already understood that stars undergo combustion in their bodies. This combustion draws in a large amount of fuel and creates a large amount of energy.

According to one scientist, as a very large object, more than 99% of the mass in the solar system is in the Sun and the force of gravity suppresses it. Meanwhile, the burning that occurs inside the star creates energy that opposes the pressure of gravity. That's what keeps the sun stable. These stars keep their balance with gravity until they run out of fuel.

When this happens and the star dies and loses mass, all the elements created in the star are scattered into space.

The next generation of stars formed from that element, burned to stardust, then scattered again into space. Etc. This iterative process is called the chemical evolution of galaxies.

How Does Star Dust Get To Earth?

So, how does star dust travel to Earth? In areas where the star undergoes the previously described nova or supernova, the explosion releases a large cloud of stellar dust and gas into space. When that happens, the element can create a new object.

A scientist says that every element is produced in the stars and when these elements are combined, we can make gas, minerals and even bigger celestial bodies like asteroids.

From asteroids then we can make planets and finally we can make water and other materials needed as a source of life and ultimately humans.


So are we made of star dust? Literally, the human body is made up of the same elements that make up the stars.

Most of the elements that make up our bodies have been formed in the stars over billions of years and through repeated stellar lives.

However, it is not impossible that some of the hydrogen that makes up 9.5 percent of our body and a small amount of lithium, came from the Big Bang billions of years ago.

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