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Mystery Of Universe!!!!!!!!!!!!!!


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Five billion years ago, a dark, vast cloud of gas and dust stretched across hundreds of light-years of space. Inside the cloud, temperatures hovered just a few degrees above absolute zero. In one small region nestled deep within the cloud, the turbulent bulk motions of gas molecules bunched enough mass together that gravity could exert its inexorable force, causing part of the cloud to collapse. Millions of years later, gravity squeezed the densest regions of the shrinking cloud to temperatures and pressures high enough to ignite thermonuclear fires, forming thousands of newborn stars.

And 4.6 billion years after that, one of the small chunks of debris left over from the formation of one of those stars, intelligent beings emerged who could ask questions about their origin. Our Sun, our solar system, our planet, everyone we know, everything we love, everything we ever cared about — all of these owe their existence to a collapsing gas cloud some five billion years ago.

Our lives are intimately linked to the stars. Thermonuclear reactions deep inside the Sun provide the sustenance for life on Earth. The carbon in our cells, the oxygen we breathe, the calcium in our bones, and the iron in our blood were forged inside stars that expired billions of years ago. So, you see that virtually everything is made from star dust, we are star dust.

Thank you.


See you in next post.

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