This is one of six images taken by NASA Spitzer Space Telescope that show binary stars forming common envelopes.

Astronomers witness the rare break up of a star couple

Astronomers have witnessed a rare and important life event in the evolution of binary star couplings for the first time.

The team discovered a tight binary star surrounded by an expanding shell of material. This shell is matter is leftover from a stage in the stars’ evolution called the common envelope phase.

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