On the left is a Chandra X-ray Observatory X-ray image that reveals a large cloud of hot gas that extends throughout the Hydra A galaxy cluster. Image is 2.7 arcmin across. Right ascension (RA) 09h 18m 06s Declination (Dec) -12° 05' 45" in the constellation Hydra. Observation date: October 30, 1999. Instrument: ACIS. Credit:NASA/CXC/SAO. On the right is an image that has the radio image of Greg Taylor, NRAO, overlain on the X-ray image from Chandra. The radio source Hydra A originates in a galaxy near the center of the cluster. Optical observations show a few hundred galaxies in the cluster. Credit:NASA/CXC/SAO; Radio: NRAO.
