The comet-like tail behind the galaxy ESO 137-001 is clearly shown in this 2007 Chandra X-ray Observatory image. The 70,000 light year long tail was created as gas was stripped from ESO 137-001 while it plunges toward the center of Abell 3627, a giant cluster of galaxies. Image credit: X-ray: NASA/CXC/MSU/M. Sun et al.; Optical: SOAR (MSU/NOAO/UNC/CNPq-Brazil)/M.Sun et al. #NASAMarshall #Chandra #NASA #ChandraXrayObservatory #galaxy #galaxycluster