SNR

Super nova remnants are just like the name implies. Once a star above 3 solar masses is done with its life, it will most likely collapse in on itself and then explode in the second largest, second most violent explosion in the universe, only dwarfed by the big bang itself. The core of the deceased star is what will remain. It will be a very hot but a very, very small shred of what was not ejected into space. This core will sit inside of the new nebulous debris field it has made. As for the matter ejected and the matter swept in the blast, the entire space that is occupied by this explosion will become very very hot and radiate. as the explosion cools to a mere 20 thousand kelvin, ultraviolet radiation will start to leak through and the real radiation storm will begin. After a while the initial velocity of the explosion will drop off and the remnant will be the last part of a once great star!

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