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Communications of the ACM

ACM Opinion

Time Travel: Installing an Atomic Clock at 15,000 Feet

Large Millimeter Telescope

The Large Millimeter Telescope in the Mexican state of Puebla.

A few months ago I went to Cambridge, Mass. to check in with the Event Horizon Telescope crew and found Shep Doeleman, the project leader, fresh off the completion of a major purchase.

From Scientific American
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