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Using the biggest telescopes in the world, including the Very Large Telescope facility in Chile, the group has made detailed 3D maps of the galaxies, using the movement of their stars to "trace" the impression of the dark matter among them and weigh it very precisely.
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Last June, AT&T (then SBC Communications) was the first of the two large phone companies to dramatically reduce its DSL pricing--to $14.95 for the first year of service. In August, Verizon followed suit, offering its new tier of service, which includes 768kbps downloads, for $14.95 per month. And last week, AT& answered back, with a $12.99 price tag for the first year. Since AT&'s prices are promotional, after the first year the price of the service jumps to the company's regular pricing model, which is $29.99 per month.
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Although the shuttle team has significant engineering work yet to complete in order to make a launch during the targeted window of 3 to 22 May, Casper says NASA is "going to continue to work toward that window". He also outlined the agency's progress on the three recommendations from the Columbia Accident Investigation Board that were not fulfilled before Discovery's July 2005 launch.