Are We All Really Made of Star Stuff
life·@sauravrungta·
0.000 HBDAre We All Really Made of Star Stuff
<html> <p><img src="https://s24.postimg.org/f8touabad/0.jpg" width="700" height="420"/></p> <p><a href="https://in.pinterest.com/pin/79727855877249136/">Image Credits</a></p> <p>The origin of life on Earth has been a long standing mystery which has been researched upon for a long, long time by some of the most brilliant minds on the planets. </p> <p>Though we have a vague answer to when life first showed up, we don’t have an exact answer. Also, we have absolutely no idea how life came to be. </p> <p>Of course we have theories that try to explain the mystery but they are only that, theories. So, what is it that we do know about us and all the living organisms on this planet? </p> <p>Well, we might not know how life itself came to be but we know where the ingredients of life came from. It all started at the heart of a star. That’s right, we are all made of star stuff. </p> <p><img src="https://s24.postimg.org/mq2w9i0th/1.jpg" width="600" height="360"/></p> <p><a href="http://earthsky.org/space/carl-sagan-birthday-november-9-1934">Image Credits</a></p> <p> Some of you may already know this, some of you may find it surprising, but it is one of the most beautiful truths out there. We really are cosmic entities. In fact, in a sense, we are a living form of the cosmos itself. </p> <p>It was Carl Sagan who mentioned this in his book “The Cosmic Connection: An Extraterrestrial Perspective” which was published in 1973. Though the theory predates him, he played a vital role in enlightening the masses about it. </p> <p>He also spread this idea in his television series “Cosmos” in the late 1980s. Cosmos is considered a milestone scientific documentary and got the common man interested in the bigger questions. </p> <p> In one episode, Carl Sagan stated, “We are a way for the universe to know itself. Some part of our being knows this is where we came from. We long to return. And we can, because the cosmos is also within us. We're made of star stuff”. </p> <h1>How Were These Elements Made?</h1> <p><img src="https://s24.postimg.org/5qtxu8plx/2.jpg" width="398" height="345"/></p> <p><a href="https://www.e-education.psu.edu/astro801/content/l6_p5.html">Image Credits</a></p> <p> So, how exactly are we star stuff? What kind of stuff is it that we are made of anyway? Well, I’m glad you asked. We are taught in school that carbon, nitrogen, oxygen, hydrogen, phosphorus and sulphur are among the most common elements found in a living body. </p> <p>There are many more but these are the most common ones. Every single atom of these elements (except hydrogen) that we are made of, was manufactured in the core of a giant star some 4.5 billion years ago. </p> <p>At the core of a giant star, there is immense pressure and gravity which combines atom together to form larger atoms which in turn produces heat and light. Hydrogen atoms fuse together to form helium, helium atoms fuse together to become beryllium and so on until the star creates every element up to iron. </p> <p>So the iron atoms in the Earth and in your blood, were all manufactured, inside a star. The carbon in your body, the oxygen in your blood, the calcium in your bones, all came from the mighty stars. </p> <h1>How Did These Elements Make Everything ?</h1> <p><img src="https://s24.postimg.org/3njimkpt1/3.jpg" width="588" height="355"/></p> <p><a href="http://www.redorbit.com/news/space/1113414247/slow-growing-supernova-052516-2/">Image Credits</a></p> <p>Ok, now we know how these elements were made. So, how did they come to be the building blocks of life. Well, for life to be, the stars had to die. It seems to be a recurring theme in nature.</p> <p>When the sun creates iron in its core, it can no longer make new elements. As a result, the star spends more energy than it can generate by way of nuclear fusion. When no more fusion can occur at the core, the star explodes with the energy of an octillion (10 to the power of 27) atomic bombs. </p> <p>This is called a supernova and it literally disperses all the elements that were inside the sun across the vastness of space. Stars are constantly bombarding and dispersing these elements throughout the space. </p> <p>So, when life was first taking its baby steps on Earth, all the necessary elements were already present here to facilitate that, and the rest…..is history!</p> </html>
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