This writer has the privilege of working with the top scientists studying the Moon. Though Galileo 400 years ago saw lunar seas in his telescope, for the last century the Moon was thought to be dry as a bone. When traces of H2O were found in Apollo lunar samples, the water was thought to be contamination from Earth. Things change, as scientists also thought the speed of light was constant.
At 2 PM EST today a NASA media briefing will announce major findings about water on the Moon. The latest data comes from India's Chandrayaan spacecraft, which went dead weeks ago but returned signs of water on the Moon.