This Hubble Space Telescope image depicts a small section of the Cygnus supernova blast wave, the result of the “death” of a star 20 times more massive than our Sun 10,000 to 20,000 years ago. Light from this supernova takes around 2,400 years to reach Earth.
Click here for original story, Hubble Views Edge of Stellar Blast
Source: NASA Goddard Center