What is Helix nebula?

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What is Helix  nebula?

By a staff reporter: On Monday, NASA shared a sonification of a planetary nebula captured by the Hubble telescope. In its caption, the space agency explained, the Helix Nebula is 655 light-years away from the earth, and three light-years across. The eerie sound that is heard in the post comes from the dying sun-like star's life.