Luminous red nova

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A luminous red nova (abbr. LRN, pl. luminous red novae, pl.abbr. LRNe) is a stellar explosion thought to be caused by the merging of two stars. They are characterised by a distinct red colour, and a light curve that fades slowly with resurgent brightness in the infrared.

Excerpt from the Wikipedia article “Luminous red nova”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: NASA, ESA and H.E. Bond (STScI), Public domain, via Wikimedia Commons.