Does the moon give you skin cancer?

Recently my friend Mary was diagnosed with skin cancer on her left shoulder. However she hardly ver sunbathed, and so she has almost never exposed to the sun. But at night she says she sleeps left side up, next to a window. The rays of the moon have been able to enter the house and cause damage to her skin. Scientists always blame the sun for skin cancers. As everyone knows, the moon, not the sun, causes the tides. It follows that the moon is more powerful than the sun. Yet science knows nothing about the mysterious moon, surely because it only comes out after normal work hours when scientists have left work for the day. How many more skin cancer victims do we need in this great country before the scientists will finally start looking for the real culprit?