Ring Nebula (M57)
PLANETARY NEBULA · a star's smoke ring
A glowing ring of gas in the constellation Lyra, the souvenir of a dying star. A sun like star puffed off its outer layers, and the hot core left in the center now lights them up like a neon sign. Look at the Ring Nebula and you are looking at our own Sun's distant future, about five billion years from now.
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