Stars similar in size to the Sun do not explode as supernovae; Their deaths tend to be longer and much more drawn out. The process begins once a star consumes most of its hydrogen fuel content, which ultimately forces it to resort to burning the helium that accumulated in its core over the course of its 10-billion-year lifespan.
This, of course, only hastens the star's demise, being that it blooms dramatically in size and loses vast quantities of its mass—materials that forge the beautiful objects called planetary nebulae.
A new image from the Hubble Space Telescope features one such nebula—classified as NGC 6565 (or ESO 456-70). It is located approximately 15,000 light-years from Earth toward the Sagittarrius constellation
This image of NGC 6565 was submitted into the Hubble’s Hidden Treasures competition by Matej Novak. (See a larger image here)