How Is A Planetary Nebula Formed - When such stars die, they expel their outer. Web bibliography nebula is a latin word meaning cloud, but in an astronomical context, it refers to any celestial object. Web examples of the latter case are planetary nebulae formed from material shed by a star in late stages of its stellar evolution. Web planetary nebula, any of a class of bright nebulae that are expanding shells of luminous gas expelled by dying stars. When a star like our sun dies, it doesn’t explode into a supernova or collapse into a black hole.
Web examples of the latter case are planetary nebulae formed from material shed by a star in late stages of its stellar evolution. Web planetary nebula, any of a class of bright nebulae that are expanding shells of luminous gas expelled by dying stars. When such stars die, they expel their outer. When a star like our sun dies, it doesn’t explode into a supernova or collapse into a black hole. Web bibliography nebula is a latin word meaning cloud, but in an astronomical context, it refers to any celestial object.