Wolf-Rayet 134 (WR 134) is a luminous, high-mass variable star located approximately 6,000 light-years away in the constellation Cygnus. WR 134 was one of three stars in Cygnus observed in 1867 to have unusual spectra consisting of intense emission lines rather than the more normal continuum and absorption lines. These were the first members of the class of stars that came to be called Wolf-Rayet stars (WR stars) after Charles Wolf and Georges Rayet who discovered their unusual appearance. As a member of the rare nitrogen-sequence Wolf-Rayet class (spectral type WN6), it represents an extreme and final stage of stellar evolution where a massive star has shed its outer hydrogen envelope to reveal a scorching-hot helium-burning core. With a surface temperature exceeding 63,000 K, WR 134 is roughly 400,000 times as luminous as the Sun, though it radiates primarily in the ultraviolet spectrum. The star is most famous for its stunning “bubble” or “ring” nebula, a delicate arc of ionized gas – most visible in the teal-colored light of doubly ionized oxygen (OIII) – sculpted by fierce stellar winds screaming outward at nearly 1,700 km/s. These winds plow into the surrounding interstellar medium, creating a vast shock front that serves as a preview of the star’s inevitable demise as a supernova.  From Wikipedia and Gemini AI.