Contact: Megan Watzke
Chandra X-ray Center
Caption: Enormous arms of hot gas have been revealed in the Coma galaxy cluster in data from NASA's Chandra X-ray Observatory and ESA's XMM-Newton. A specially processed Chandra image (pink) has been combined with optical data from the Sloan Digital Sky Survey (white and blue) to highlight these spectacular arms. Researchers think that these arms -- which span at least a half million light years -- were most likely formed when smaller galaxy clusters had their gas stripped away by the head wind created by the motion of clusters through the hot gas.
Credit: X-ray: NASA/CXC/MPE/J. Sanders et al; Optical: SDSS
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