The star is ending its life by casting off its outer layers of gas, which formed a cocoon around the star's remaining core.

- Image ID: D99A9P
The star is ending its life by casting off its outer layers of gas, which formed a cocoon around the star's remaining core.
World History Archive / Alamy Stock Photo
Image ID: D99A9P
The star is ending its life by casting off its outer layers of gas, which formed a cocoon around the star's remaining core. Ultraviolet light from the dying star makes the material glow. The burned-out star, called a white dwarf, is the white dot in the center. Hubble Space Telescope (HST).