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DYD B-11
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| Languages http://al4a.fun al4a com The mirror is 27 feet across and is the third of seven that will combine to create a mirror 80 feet across. The mirror alone will weigh 20 tons when completed. The mirror will go into a rotating furnace capable of reaching 2,140 degrees Fahrenheit at the University of Arizona's Steward Observatory Mirror Lab in Tucson. |
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2019-05-22 05:07:53 |
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