Welcome aboard! as they say. I enjoyed reading your article about an article and I voted on it too! [http://pubs.usgs.gov/gip/geotime/age.html] I am going to cut and paste a few lines from the USGS (United States Geological Survey) publication above right in below here and then if you want to read the entire thing which you should read you can link to it directly. "The Moon is a more primitive planet than Earth because it has not been disturbed by plate tectonics; thus, some of its more ancient rocks are more plentiful. Only a small number of rocks were returned to Earth by the six Apollo and three Luna missions. These rocks vary greatly in age, a reflection of their different ages of formation and their subsequent histories. The oldest dated moon rocks, however, have ages between 4.4 and 4.5 billion years and provide a minimum age for the formation of our nearest planetary neighbor." "The best age for the Earth (4.54 Ga) is based on old, presumed single-stage leads coupled with the Pb ratios in troilite from iron meteorites, specifically the Canyon Diablo meteorite. In addition, mineral grains (zircon) with U-Pb ages of 4.4 Ga have recently been reported from sedimentary rocks in west-central Australia." Current ideas, and comparisons of the Earth and Moon's crust show the elemental ratio signature in the rocks is strong enough to strongly suggest that the Moon was formed from the collision of Earth with a nearly Mars-sized object 4.5 billion years ago. You might want to improve your maths and study the physics of such a collision which in addition to blasting the material of the proto-Earth into space, melted the blob that would become Earth completely. Moon mass is 1/80th of earth mass.