18 JAN 2012 by ideonexus

 The Coughings of Super-Novas Color Our Blood

Ancient stars in their death throes spat out atoms like iron which this universe had never known. ... Now the iron of old nova coughings vivifies the redness of our blood.
Folksonomies: stars blood iron
Folksonomies: stars blood iron
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Iron comes from super novas, which colors our blood red.

01 JAN 2012 by ideonexus

 We Are Made of Star Stuff

The fate of individual human beings may not now be connected in a deep way with the rest of the universe, but the matter out of which each of us is made is intimately tied to processes that occurred immense intervals of time and enormous distances in space away from us. Our Sun is a second- or third-generation star. All of the rocky and metallic material we stand on, the iron in our blood, the calcium in our teeth, the carbon in our genes were produced billions of years ago in the interior of...
  1  notes

This might be the original source of this quote.

13 DEC 2011 by ideonexus

 The Creation of Carbon in Stars

The first step occurs when older stars start to accumulate helium, which is produced when two hydrogen nuclei collide and fuse with each other. This fusion is how stars create the energy that warms us. Two helium atoms can in turn collide to form beryllium, an atom whose nucleus contains four protons. Once beryllium is formed, it could in principle fuse with a third helium nucleus to form carbon. But that doesn't happen, because the isotope of beryllium that is formed decays almost immediatel...
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Requires a very delicate balance of natural laws. If the strong nuclear force were to change by as little as 0.5 percent, there would be no carbon or oxygen in the Universe.