Wolf Rayet 104

A Wolf Rayet star is larger than the Sun and two or there times hotter. It is suspected that some stars of this class are fusing heavier elements in their cores. They are identified by light emitted by ionised helium, nitrogen and carbon.

WR 104 is about 8500 light years from Earth. It is actually three stars, and part of a small nebula. Like our galaxy, which is sometimes called a pinwheel galaxy, Wolf Rayet is a pinwheel nebula. This might be evidence that celestial bodies from far away came close enough that their gravitational attractions bound them together and produced the pinwheel effect.

Interest in Wolf Rayet 104 is fueled by being near Earth, but also due to what we have learned about gamma ray bursts.