Gold Half Moon Medal Two First Kepler's Laws 2009 Proof

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Kepler's Laws of Planetary Motion - 400th Anniversary

The gold commemorative medal was issued by the Czech Mint in 2009, weighing 1/2 ounce (15.56 g) in purity of the purest 99.99% gold in top quality proof to commemorate the 400th anniversary of Kepler's Laws of Planetary Motion. These gold medals are rarely seen and are therefore highly sought after by collectors and investors. The medal comes in a red plastic box along with a numbered certificate of authenticity in a very limited edition of only 600 pieces!

Johannes Kepler

Johannes Kepler, the discoverer of the laws of planetary motion, was born in 1571 in Weil der Stadt, Germany.Kepler studied theology, philosophy and mathematics at the University of Tübingen, earning the lower academic rank of Bachelor of Arts in 1588 and the higher rank of Master of Liberal Arts three years later.

Although most scientists of the time vehemently disagreed with Copernicus's heliocentric theory and still accepted the old Ptolemaic theory, namely that the earth was the centre of the universe, Kepler studied Copernicus's theory in great detail and had it intelligently clarified in Tüebingen and soon came to believe it.

Given the importance of Kepler's results, it is surprising that almost no one took note of them at first, not even a scientist as great as Kepler's friend Galileo. But Kepler didn't mind that his results were ignored by other scientists, and he believed that in the future the scientific world would fully appreciate Kepler's discoveries.And indeed, within a few decades, the importance of Kepler's work became apparent to the scientific world.

His work, Introduction to Copernican Astronomy (epitome astronomiae Copernicanae ), became one of the most widely circulated and respected scientific treatises on astronomy in Europe, contributing greatly to the production of the first telescope lenses.

This work included interpretations of the discoveries of Nova. Kepler's personal contribution to the development of astronomy can almost be compared to that of Copernicus. In some ways, Kepler's results were even more impressive. His work is entirely original, and Kepler struggled with difficult mathematical calculations without any technical aids to facilitate his work.

Johannes Kepler died in 1630 in Reims, Bavaria. His laws of planetary motion proved a more lasting monument than his tombstone, which was destroyed during the Thirty Years' War.

Kepler's laws

Kepler's laws are three physical laws describing the motion of the planets around the Sun. However, they apply more generally to the motion of any body in the central force field, that is, in the region of some centripetal force whose attraction decreases with the square of the distance, as does the gravity of a significantly more massive body. It can therefore be applied, for example, to the motion of the moon or an artificial satellite around the earth, but with less precision, since the influence of the sun in this case is not negligible.