October 29, 2012
ESA XMM-Newton Telescope Captures Space Bubble
Lee Rannals for redOrbit.com — Your Universe Online
The cauldron bubble lies 5,000 light-years away from Earth, and is a bubble bursting with the fiery stellar wind of a star.
This pink star is near the center of the image that makes up one of the object's piercing eyes.
Wolf-Rayet bubbles are the result of a hot, massive star that expels material through a strong stellar wind. This star's howling wind is a million-degree plasma that emits X-rays, which in the image shows up blue.
The green halo seen in the image is a result of a shock wave racing out from the star and colliding with layers of stellar material that has already been ejected into space.
ESA said that eventually the bubble will burst and disperse into the surrounding environment, while the star will end its life in a dramatic supernova explosion.
The paper entitled "X-Ray Emission from the Wolf-Rayet Bubble S 308" and written by J. Toala et al was published in the Astrophysical Journal.