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SSTGFLS J222557+601148

This is a rather young supernova remnant only observable in infrared. To all appearances not too long ago a star exploded here in a poor copy of a supernova, not with a massive bash but with a gentle cough.
The star was lying beyond the galactic plain in a region with very few interstellar dust. Probably it was very poor with heavy elements, causing this unusual weak explosion.

Constellation: Cepheus
Distance: 30 000 light-years
Mass: 25 * Sun

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    SSTGFLS J222557+601148
The unimposing round nebula is the supernova remnant.
Infrared photo: NASA/JPL-Caltech/P. Morris (NASA HSC)

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