Anderson, Indiana

Did the earth once have two moons?

Tue, 2012-04-17 08:43 -- univcomm
April 17, 2012

By Dr. John P. Millis, assistant professor of physics at Anderson University.

Ask any elementary school aged child what that bright object is in the night sky and they will, undoubtedly, reply that it is the Moon.

This grayish orb has been studied and scrutinized for millennia by astronomers across the globe. Over the years we have come to understand more and more about our nearest neighbor, and that knowledge took a large leap forward during the Apollo Moon landings when samples were gathered and brought back to Earth for analysis.

There have also been unmanned missions to orbit the Moon, to analyze both what we see (the familiar side of the Moon that always faces the Earth) as well as the far side of the Moon which most of us never observe — except perhaps in pictures.

Even after all of this study there are still properties of the Moon that baffle scientists. And perhaps the biggest mystery of them all is why the far side of the Moon appears so different than the side that we see every day.

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Anderson University is a private Christian university of 2,600 undergraduate and graduate students in central Indiana. Anderson University continues to be recognized as one of America's top colleges by U.S. News and World Report, The Princeton Review, and Forbes. Established in 1917 by the Church of God, Anderson University offers more than 65 undergraduate majors and graduate programs in business, education, music, nursing, and theology.