This delicate-looking shell, known as SNR B0509-67.5, is in fact a gaseous envelope formed by the expanding blast wave and ejected material from a supernova in the Large Magellanic Cloud.
The bubble-shaped shroud of gas is believed to be 23 light-years across and is expanding at more than 18 million km/h.
April 25, 2013 12:03 PM PDT
Photo by: NASA, ESA, and the Hubble Heritage Team (STScI/AURA)
| Caption by: James Martin
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