I had my first good laugh at my desk in a long time. And no one around to hear it. (So did I make any sound - or more to the point, do I exist?) -----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Daniel Holmes Sent: Wednesday, September 26, 2012 9:32 AM To: Utah-astronomy Astronomy Subject: [Utah-astronomy] XKCD: What if? I've posted a few XKCD comics here over the past while. He started a new feature a few months ago. Every Tuesday called 'What if?' he answers questions with science facts and math. This week's: What if everyone on earth pointed a laser at the Moon? Would it be visible? Interesting answer: http://what-if.xkcd.com/13/ Read the back catalogue too--my favorites are http://what-if.xkcd.com/8/ and http://what-if.xkcd.com/1/ Dan -- Daniel Holmes, danielh@holmesonics.com "Laugh while you can, monkey boy!" -- Lord John Whorfin