From the creators of Aeon Flux…
I am proud to be part of a species where a subset of it’s members willingly put their lives at risk to push the boundaries of our existence.
- Neil deGrasse Tyson
A planetary nebula is a shell of gas produced by a star as it nears the end of its life cycle. Their name can be a bit misleading. They actually have nothing to do with planets. These nebulae were given this name because they often look like planets due to their round shape. The outer shell of gas is usually illuminated by the remains of the star at its center.
3. NGC 2818 By Hubble Heritage
4. NGC 6326 By ESA/Hubble and NASA