A NASA X-ray telescope has captured a breathtaking portrait of a supernova remnant, revealing unseen features of the exploded star. A NASA X-ray telescope has captured a breathtaking portrait of a supernova remnant, revealing unseen features of the exploded star. What is it? This image depicts the supernova remnant SN 185, found some 8,000 light-years away from Earth in the direc... [1335 chars]