Illinois Junior Academy of Science - Yearbook (Urbana, IL)

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Determining Relative Lunar Distances ancl Appli- cations ULDIS SAULE Willowbrook High School Villa Park This project is the result of my particular interest in the lunar field of astrophysics. I have serously been engaged in the hobby of astronomy and astrophysics for the last four years. In this project I have developed an original method to determine with accuracy distances on the moon. This involved correcting the apparent distances for distortion due to spherical perspective. I have developed a method to de- termine the altitudes of features on the moon by measuring the shadows cast by them from photographs which I have taken through an eight inch reflecting telescope. Using these methods I have measured the depths and diameters of craters on the moon and from this I have derived an equation which relates crater depth to crater diameter. I have also developed an equation which enables me to determine the angle of inclination of the inner wall of a crater if the crater's depth and diameter are known. Recently I have completed a series of equations which will make it possible for me to compare the volume of the part of a lunar crater below the relative surface of the moon with the volume of the crater's wall above the relative surface of the moon. Movements of Celestial Boclies JOHN SORTINO Brother Rice High School Chicago Sponsor: Brother Kelleher Will Mil S tfiai.i:s'1'mi, . -. t mmuzs 1 l ,Mi o - zyi 73, f it 1 . 'Q fvrs , , , In summary I would like to say that my project has much to do with the laws of such great men as Einstein, Kepler, Bache, Newton, Galileo, Hubble, Hooke, and Halley. It takes in one of the greatest problem in astronomy, mo- tions in the universe. It takes in many theories such as the big-bank theory of the life of a galaxy, and Hubble's theory on galatical classification. It has to do with many proven facts such as Newton's law of gravity and law of inertia: Galileo's proof that any two objects will fall to the ground at the same rate g and Kepler's elliptical law, law of equal areas, and harmonic law, My project shows that the gravi- tational center between the earth and moon moves around the sun, and the rotation period is the same as the period of revolution for the moon. All these laws, theories, and rules prove that the universe does have set patterns, where motion is no exception. Many things in the universe are a mystery. How motions started? and What keeps the motion going ? - are mysteries which only time will solve.

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