We human are very eager that we want to know everything. Like if something happens at lower layer of the earth or massive explosion happens a far away in our galaxy as well as in other galaxies.
Today, luckily got a chance to listen one of the scientists from TIFR (Tata Institutes of Fundamental Research) talking about the Supernova, Gamma rays and from born of the stars to their end of life. Some of the interesting facts, which I got to know from this lecture just putting hereby.
Stars are born with the Hydrogen gas in the universe due to pressure and gravitation forces. Later on they converted in to Helium and at the end when they are about to explode they have Iron atoms. When they explode, the amount of lights radiate out of its nucleus will go to very far distance - may be many million light years. The most interesting fact which amazed me a lot is that the supernovas are major contributors to human bodies. The iron and calcium in our blood and bones respectively are it’s because of this massive explosions happens in universe.
For a human, it is most lucky chance to get to watch the supernova happening. Actually, we can predict when a particular star will die and can plan to see the supernova. But if the calculation of this prediction has even a small error then this error has a span of almost 10,000 years here and there..!!! There are some lucky scientist who got to see the supernova happening somewhere in Southern Hemisphere.
Explosions are happening millions of light years away from here in the galaxy and human are building theories about them just sitting hereby based on some equations and logics. No wonders that in a few decades you will hear that people are going to mars for holidays because of these scientists.
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