This wide-field image generated from the Digitized Sky Survey 2 shows the sky around the galaxy NGC 4993. This galaxy was the host to a merger between two neutron stars, which led to a gravitational wave detection, a short gamma-ray burst and an optical identification of a kilonova event.
Image Credit: ESO and Digitized Sky Survey 2
Explanation from: https://www.eso.org/public/images/eso1733i/
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