Institute of Theoretical Science
University of Oregon, Eugene, OR 97403
Kavli Institute for Theoretical Physics
University of California, Santa Barbara, CA 93106

We argue that the cosmic microwave background (CMB) provides a stupendous opportunity for the Creator of universe our (assuming one exists) to have sent a message to its occupants, using known physics. Our work does not support the Intelligent Design movement in any way whatsoever, but asks, and attempts to answer, the entirely scientific question of what the medium and message might be IF there was actually a message. The medium for the message is unique. We elaborate on this observation, noting that it requires only careful adjustment of the fundamental Lagrangian,but no direct intervention in the subsequent evolution of the universe.

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Message in the sky