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.
Rating Newest Oldest. Best Answer: The Earth rotational speed IS slowing down, primarily because of its interaction with the Moon. Over millions of years, the rotation is significantly slowed by gravitational interactions with the Moon from reactive effects of tidal acceleration. Astronomers can measure this very precisely now that they have atomic clocks to provide a non-celestial time standard for comparison.