George Hall's 10-year-old, high-powered telescope was trained on Jupiter at 6:35 a.m. on Monday when it caught a brief flash of something lighting up Jupiter's surface. Hall didn't actually see the flash -- possibly a meteor impact -- but another amateur astronomer named Don Peterson did, and when Hall checked his telescope, there it was: the first video confirmation of the event. The clip has been making the rounds ever since, even getting a plug from Brian Williams on NBC.

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