This is the image of the remnant of Kepler's supernova. A supernova remnant (SNR) is the structure resulting from the explosion of a star in a supernova. The supernova remnant is bounded by an expanding shock wave, and consists of ejected material expanding from the explosion, and the interstellar material it sweeps up and shocks along the way. This was a supernovaa that took place in the Milky Way galaxy and is in the constellation Ophiuchus. It is the last supernova to have taken place in our galaxy. It is about 20,000 light years from Earth. It was first observed in northern Italy on October 9, 1604.
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