# Intro to Astronmy - Article Example

Summary
Pictures from mars and Jupiter are being taken from the self driven rocket sent by man to exploit the outside world. This aircraft is the first to ever orbit any body outside the asteroid…

## Extract of sample "Intro to Astronmy"

Download file to see previous pages In 200 AD, astronomers believed that planets moved round the earth in small circles called the epicycle. The Heliocentric model later explained that all planets including the sun revolved around the sun. This model also explained that the retrograde motion of planets did so as the earth which moves faster than the other planets overtook the other planets. Other planets are categorized as superior or inferior to the earth. Time that is able to elapse between the configurations that are identical and consecutive is known as the synodic period.
It was Copernicus who determined the sidereal period of other planets. He was also able to know the distance between the planets and the sun. Kepler was able to come up with a law that stated that every planet has an orbit that about the sun know as an ellipse. He also came up with the semi major axis. This happens to be the distance between the planets and the sun. The measure of the deviation from the perfect circle is known as the eccentricity. Kepler had three laws to explain the motion of planets and this was a major achievement in the field of astronomy. Galileo was able to discover a lot more with the aid of a telescope. He was able to know that the earth was not at the centre of the universe. With his telescope, he was able to know that the earth was not at the centre of the universe and that the earth was just like any other planet moving around the sun. Isaac Newton later came and introduced three laws. Inertia, force and action and reaction. He was also able to come up with the laws of the universal gravitation. The law of gravitation states that two bodies attract each other with a force directly proportional to each and every mass of the two bodies. This force is also inversely proportional to the square of the distance between them. Using the law of gravitation, Kepler’s three laws can be summed up. Newton’s was able to note that every ...Download file to see next pagesRead More
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...August 26, [Click here and type recipient’s address] Dear Sir or Madam: I would like to take this opportunity to introduce myself, as a personand a writer, and show you how the two complete and compliment one another. In other words, my attachment to writing largely defines who I am as a person. I am a 32 year old British female living in London with my family, two sons, daughter and husband. As my children are still quite young, the eldest being only 10, I am a full-time mother. To be quite honest with you, while I know that women should have ambitions beyond the home, I find my life quite fulfilling. The reason is that being at home has given me the opportunity, not just to pursue my hobbies, but to work towards... 26, [Click here and ...
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### Intro & Conclusion

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### Astronmy

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### Astronmy

...of Colorado, 1989. Dicks, D.R. Early Greek Astronomy to Aristotle. London: Cornell University Press, 1970. Dreyer, J.L.E. A History of Astronmy from Thales to Kepler. New York: Dover Publications, 1953. Ehrenberg, Victor. From Solon to Socrates: Greek History and Civilization between the 6th and 5th Century B.C. United Kingdom: Routledge, 1973. Heath, Thomas L. Greek Astronomy. New York: Dover Publications Inc., 1991 Heath, Thomas L. A History of Greek Mathematics: From Thales to Euclid. New York: Dover Publications, 1981. Heath, Thomas L. A History of Greek Mathematics II: From Aristarchus to Diophantes. New York: Dover Publications, 1981. Nicastro, Nicholas. Circumference: Eratosthenes and the Ancient Quest to...
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### Astronomy Issues

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### Intro Theater

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### Intro Communication

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### Self-intro

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