Stellar showdown

ATACAMA LARGE MILLIMETER/ SUBMILLIMETER ARRAY, 5 FEBRUARY 2020

These unusual kaleidoscopic gas clouds are the colourful consequence of a clash within binary system HD101584. It shows the death of a large red giant star, where a smaller companion star has spiralled into and been engulfed by it, triggering the red giant to throw off its outer gas layer. The two stars are in the single bright dot at the centre of the green ring-like structure. The blue represents gas moving the fastest towards us, while the red is gas moving the fastest away.