16-Year-Old Cosmic Mystery Solved, Revealing Stellar Missing Link

The Blue Ring Nebula consists of two expanding cones of gas ejected into space by a stellar merger. Invisible to the human eye, it is shown here as blue

The Blue Ring Nebula, which perplexed scientists for over a decade, appears to be the youngest known example of two stars merged into one.

16-Year-Old Cosmic Mystery Solved, Revealing Stellar Missing Link

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