A chance alignment of a planetary nebula — the blown-off outer layers of a dead low-mass star — and a bright star give the illusion of a diamond ring in space:
[Image credit: ESO]
SixDay Science
Faith in Science | Science in Faith
A chance alignment of a planetary nebula — the blown-off outer layers of a dead low-mass star — and a bright star give the illusion of a diamond ring in space:
[Image credit: ESO]
SixDay Science 
I was going to make a joke about if you like it, you should put a ring on it, but I won’t.
Oh, oh, oh, oh, oh, oh …