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Wolf-Rayet stars are hot stars on their way to supernova. The radiation emitted by WR134 creates the blue oxygen shell. #astronomy #astrophotography @TeleskopService ONTC 10in f4 @zwoasi ASI1600MM Pro @TeleVueOptics Paracorr Type 2 @OStructures Astrodon https://t.co/GHwy45XqCj