From chandraxray https://twitter.com/chandraxray on Twitter: NGC 7662 is a planetary nebula located about 4,000 light-years from Earth. The diffuse X-ray light seen with Chandra (pink) is caused by shock waves as a wind from the hot remnant of the star collides with the ejected atmosphere. NGC 7662 is about 0.73 light-years across. https://twitter.com/chandraxray/status/1628385167621648384/photo/1 https://chirp.cooleysekula.net/attachment/7b333c502045a6ae7444d1a24bc0bbf64cee94504fea82d5fe1c49cb1c262114/view