PKS 0637-752  CXC Logo Chandra X-ray Observatory Center Harvard-
Smithsonian Center for Astrophysics 60 Garden St. Cambridge, MA
02138 USA PKS 0637-752: A luminous quasar in the constellation
Mensa. (Credit: NASA/CXC/SAO)  Caption: PKS 0637-72 is so
distant that we see it as it was 6 billion years ago. It is a
luminous quasar that radiates with the power of 10 trillion
suns. The source of this prodigious energy is believed to be a
supermassive black hole. Chandra's X-ray image reveals a
powerful X-ray jet extending away from the quasar that stretches
across several hundred thousand light years. The jet, also
observed by radio telescopes, is probably due to a beam of
extremely high-energy particles.  Scale: Image is 1 arcmin on a
side.  Chandra X-ray Observatory ACIS Image  CXC operated for
NASA by the Smithsonian Astrophysical Observatory