Archives for December 24, 2011

Weekend Diversion: The Physics of Santa Claus

(This post first appeared on December 23, 2009, but has been reproduced, edited, and improved for 2011.) 089:32:50 Mattingly: Apollo 8, Houston. [No answer.] 089:33:38 Mattingly: Apollo 8, Houston. 089:34:16 Lovell: Houston, Apollo 8, over. 089:34:19 Mattingly: Hello, Apollo 8. Loud and clear. 089:34:25 Lovell: Roger. Please be informed there is a Santa Claus. 089:34:31…