From NASA: "NGC 6888, also known as the Crescent Nebula, is a about 25 light-years across blown by winds from its central, bright, massive star...Visible within the nebula, NGC 6888's central star is classified as a Wolf-Rayet star (WR 136). The star is shedding its outer envelope in a strong stellar wind, ejecting the equivalent of the Sun's mass every 10,000 years. The nebula's complex structures are likely the result of this strong wind interacting with material ejected in an earlier phase. Burning fuel at a prodigious rate and near the end of its stellar life this star should ultimately go out with a bang in a spectacular supernova explosion. Found in the nebula rich constellation Cygnus, NGC 6888 is about 5,000 light-years away." (1)
The Soap Bubble nebula is a planetary nebula located near the Crescent Nebula. It was discovered by amateur astronomer Dave Jurasevich in 2008. (2)
According to Wikipedia, WR 134 is a variable Wolf-Rayet star located around 6,000 light years away from Earth in the constellation of Cygnus, surrounded by a faint bubble nebula blown by the intense radiation and fast wind from the star. It is five times the radius of the sun, but due to a temperature over 63,000 K it is 400,000 times as luminous as the Sun. (3)
In simple English, WR 134 is a really big, hot and bright star that is ionizing nearby hydrogen and oxygen gas.
(1)
https://science.nasa.gov/ngc-6888-crescent-nebula &
https://en.wikipedia.org/wiki/Crescent_Nebula(2)
https://en.wikipedia.org/wiki/Soap_Bubble_Nebula(3)
https://en.wikipedia.org/wiki/WR_134
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