In the Image:
1. Multiwavelength composite image of the remnant of Kepler’s supernova, SN 1604.
2. Multiwavelength composite image of the remnant of Tycho’s supernova, SN 1572.
3. Multiwavelength composite image of the supernova remnant N49 in the Large Magellanic Cloud.
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.
- M.T. Anderson, Feed (via skeletales)