55-year old dark side of the moon mystery solved, Penn State
"UNIVERSITY PARK, Pa. -- The "man in the moon" appeared when meteoroids struck the Earth-facing side of the moon creating large flat seas of basalt that we see as dark areas called maria. But no "face" exists on farside of the moon and now, Penn State astrophysicists think they know why."
Keith's note: This is an odd thing to put in the title i.e. "dark side of the Moon" since this constantly changes - and yet this research focuses on a specific part of the Moon that does not change. So I sent a note to the author, A'ndrea Elyse Messer, Ph.D. Sr. Science & Research Information Officer at Penn State. She replied by email "As it says in the story, the "dark" side of the moon is the side that is always turned away from the Earth. It does not change."
Baffled by her response, I asked her (again) about this and she followed with really goofy stuff i.e. "yes, the "dark" side of the moon is called that because it is the farside of the moon and was completely unknown until the Russians sent a probe around the back to photograph it. It has absolutely nothing to do with sunlight -- as is explained in the story. Dark is used in the same way it used to be used in Darkest Africa. It wasn't dark in africa, it was unknown."