It was dark and chilly in Austin on Sunday, March 10th, the night that NASA planned to break the Guinness World Record for "largest outdoor astronomy lesson." The cold front had cleared the clouds, leaving the stars bright and stark in the sky, and the 526 space geeks in NASA ball caps and T-shirts didn’t mind the temperature – they were happy to participate, even though the talk was just a basic demonstration on light and color. Some even lugged their own telescopes.
At 8:35PM, Dr. Frank Summers, the master of ceremonies and a Hubble astrophysicist, stopped abruptly to make an announcement. "Those of you with smartphones," he said, with a triumphant pause, "You can tweet that we have just finished the world’s largest outdoor...
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