Students enrolling in Carnegie Mellon University Tepper School of Business have an average GMAT of 690, which is much higher than average compared to all business schools (613).
But how did it end up being this pure in most parts of the Moon? The secondary event that explains it, notes the report, is what researchers are calling a crustal overturn. Old impure plagioclase was replaced by hot, pure plagioclase as the moon cooled rapidly. Asteroid hits, space dust, and other harsh space conditions could have also sheared away the surface impurities, notes the report.
A little atmospheric reflection gave the moon a mysterious ring of light overnight. The white ring that encircled the moon isn't much of a mystery, according to NASA scientists. The ring is caused by the reflection of the moon's light from ice crystals in the upper atmosphere. The hexagonal shape of the crystals causes the light to focus into a ring, according to the Ask an Astrophysicist feature on the Goddard Space Flight Center's Web site.