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Undated composite image courtesy of NASA shows the most distant X-ray jet from a quasar named GB 1428+4217 located 12.4 billion light years from Earth. X-ray data from NASA's Chandra X-ray Observatory is shown in blue, radio data from the NSF's Very Large Array are shown in purple and optical data from NASA's Hubble Space Telescope are shown in yellow. Giant black holes at the centers of galaxies can pull in matter at a rapid rate producing the quasar phenomenon. The researchers believe the length of the jet in GB 1428 is at least 230,000 light years, or about twice the diameter of the entire Milky Way galaxy. (Photo by Reuters/NASA/CXC/NRC/C.Cheung et al/STScI/NSF/NRAO/VLA)
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