Word: 3c
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Quasars, most astronomers agree, are the oldest, brightest, farthest and most mysterious celestial objects known to man. To this list of superlatives, scientists at the Naval Research Laboratory have now added another. After recording X rays emanating from quasar 3C 273-the first time that a quasar has been identified as an X-ray source -Physicists Herbert Friedman and Edward Byram have determined that 3C 273 is also the most powerful X-ray emitter ever discovered...
...latest addition to quasar knowledge was obtained by instruments carried aboard an Aerobee rocket shot from White Sands, N. Mex., in May. Soaring above the atmosphere, which absorbs X rays before they reach the earth, the rocket detected X-radiation from quasar 3C 273, from a giant elliptical galaxy called M 87, and from three locations in the sky where no celestial objects are visible. The recorded radiation from the quasar was only one-thousandth as great as that from a starlike object called Sco XR-1-which appears to be the brightest X-ray emitter in the sky (TIME...
...supplies or parts to a disabled ship. The Agena could even lock onto the crippled vehicle, enabling it to use the Agena's control and propulsion systems to return to earth. M.I.T. students have drawn up plans for a fleet of lifting-body rescue craft mounted on Titan 3C rockets and standing ready on launching pads-like a space-age version of the Coast Guard-to rendezvous with distressed spacecraft...
...possibility that they may have been ejected from our galaxy. Reports on the death of this idea have been greatly exaggerated. The energy problem is considerably simpler on this basis than on the conventional basis of immense distance. The receding hydrogen cloud discovered by Koehler in front of 3C 273 can more plausibly be interpreted as ejected from our galaxy, in the same manner as in other galaxies, than as part of the Virgo cluster of galaxies. The local model of quasars also has the advantage of accounting for the far-out locations of radio sources associated with other galaxies...
While strict interpretation of Hubble's law would place the farthermost quasars more than 8 billion light-years from the earth, Schmidt refuses to assign a specific distance for any beyond the closest: 3C 273. "We do not know that Hubble's law applies at cosmological distances," he explains. "All we can really say is that if the universe is 10 billion years old, then light from the farthermost quasars has been on the way to us for more than 8 billion years. When the light we see today left the farthermost quasars, the earth and the solar...