Sadly, no star lives forever, and in the Stages of a Star comes a point where it explodes and turns into a 'Death Star', in cosmological terms the star is said to have turned Super Nova.

When a star dies it shines brighter than it has ever shone before and brighter than it ever will again (oh dear, I feel a song coming on...).

Death Stars are beautiful to look at and thanks to the Hubble Space Telescope you can veiw what now has become a particularly famous 'Death Star' called the Cat's Eye Nebula at -
http://hubble.stsci.edu/discoveries/hstexhibit/stars/stardeath.shtml