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Manchester, England (UPI) Dec 22, 2010 An array of radio telescopes in Britain has captured images of a galaxy pouring out a huge jet of matter from the black hole at its center, researchers say. The first images from the new e-Merlin array of linked telescopes show a distant quasar 9 billion light years from Earth, SPACE.com reported Wednesday. Quasars, energy-spewing supermassive black holes at the center of galaxies, are among the brightest objects in the universe. The e-Merlin images were of an object dubbed the "Double Quasar" because its light gets bent around another galaxy closer to Earth by the curvature of space, resulting in a "gravitational lens" that produces multiple, magnified images of the same quasar, scientists said. "This first image of the Double Quasar clearly demonstrates how useful e-Merlin is going to be in our studies of gravitational lenses," Neal Jackson of the University of Manchester said. "By mapping the bending of light by mass, we will be able to study the way in which both stars and dark matter are distributed in galaxies and how this changes as the universe evolves." The e-Merlin array will serve as Britain's national facility for radio astronomy. The array will produce detailed radio images of stars and galaxies using seven telescopes spread up to 137 miles apart across Britain working as one.
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The Webb Telescope's Actuators: Curving Mirrors In SpaceGreenbelt MD (SPX) Dec 13, 2010 NASA's James Webb Space Telescope is a wonder of modern engineering. As the planned successor to the Hubble Space telescope, even the smallest of parts on this giant observatory will play a critical role in its performance. A new video takes viewers behind the Webb's mirrors to investigate "actuators," one component that will help Webb focus on some of the earliest objects in the universe. ... read more |
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