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.
If 70% of our earth is covered in water, what do we know about how fast or slow the planet can heat up or cool down? Does our planet heat up and cool down very quickly like the sand or does it retain heat and change temperatures very slowly like the water? (The oceans are what make our planet habitable. If earth was mostly land, we would reach high temperatures very quickly during the day and freezing temperatures as the sun