Newton's Law Of Universal Gravitation

10. Select two details from the lesson that helped you understand why do the Northern and Southern Hemisphere have opposite seasons.

Saturn is the second largest planet and sixth number planet of our solar system. Saturn is a gas giant made up of hydrogen and helium. It is big enough to hold more than 760 Earths within it, and is second massive planet after Jupiter, roughly 95 times Earth 's mass. However, Saturn has the lowest density among all the planets of solar system .It spins faster than any other planet except Jupiter which help Saturn with its magnetic field which is about 578 times more powerful than Earth 's. Although Saturn has at least 62 moons but its largest moon, Titan, is slightly bigger than Mercury, and is the second-largest moon in the solar system after Jupiter 's moon Ganymede (our moon is fifth largest).Although it is the most interesting planet

This goes hand in hand with Newton's Laws of motion and universal gravitation. Newton's law of universal gravitation states that a particle attracts every other particle in the universe using a gravitational force and Newton's law of motion states that every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force. Newton's Laws back up Kepler's laws by explaining how the planets orbit is an ellipse with the Sun at one of the two foci or center. The force that allows this to happen to the planets are explained by Newton's law and that the gravitational force is moving the planets into rotation, as by the law of motion. These forces assisting each other can make phenomenon's occur such as tides.

In 1668 the world 's first reflecting telescope was built by a well known scientist, Isaac Newton. Although Newton accomplished many things in his life he also faced many struggles growing up. Not only did Newton invent the world 's first reflecting telescope he developed the three laws of motion, discovered many new facts about gravity and had many other accomplishments throughout his lifetime. Isaac Newton is often referred to as one of the most influential scientists. He and Albert Einstein are almost equally matched contenders for this title (The Doc, 2015).

The discovery of Uranus was a pretty big achievement for the astronomical world. It showed many that there was the possibility of many other planets existing in our solar system past Saturn. There wasn’t really that much thought put into identifying other planets past Saturn since almost everyone did not think that there would be planets out there. This all changed after William Herschel’s discovery in 1781. While it does mark an important achievement for the astronomical world, I do not think that he was really intending on finding a new planet, since it was generally accepted that there were not more for the past 2,000 years. There were many questions asked, such as is it large enough, is it circular, what is its orbit, and other things.

Galileo heard about a telescope being made and tried it out himself. He created his own telescope and pointed it out into space. There he found that there were four small moons circling around Jupiter, while Jupiter went around the sun (Voelker 17). Since Jupiter revolved around the sun, that meant other planets had to also. “The fact that the moons revolved in the plane of Jupiter rotations implied that the moons were being swept around by a planet-moving force coming from Jupiter” (Voelker 71). Basically Voelker is saying, that the moons are moved by Jupiter’s rotation and gravity, showing that Jupiter is the center for those moons. When Galileo was looking through his telescope, he observed that Venus was in a different phase each day. He recorded that Venus goes through phase changes like the moon, which meant that Venus had to be revolving around the sun (Frey 392). “Galileo saw that Venus had all the phase changes that the moon had, so it could not be orbiting Earth. More and more evidence was being found to support the Copernican Theory.” In this comment Hightower made on page 63, he argued that Venus’s phase changes inferred that Venus was not revolving around the Earth. “Galileo’s work was more important than just scientific discoveries. He provided ample evidence that Aristotle was wrong in many things” (64). Hightower agrees with the fact that Galileo

I chose “Astronomy: Discovery of Uranus by William Herschel in 1781” as the topic for my research. I found that William Herschel was many things, including a musician, composer, teacher, and astronomer. William also built his own telescopes to look into the night sky. During one of his searches, he found something odd; it wasn’t a nebulous star or comet, but something different. It turned out to be a planet which he named “Georgium Sidus” or Georges star in honor of George III. The motivation for the discovery was his love of the heavens. He and his sister had found many objects in the night sky including several comets. I am positive that Herschel had relied on the work of others but the articles didn’t specify. The reason I am positive

The first astronomers had a great influence on what we now know as modern Astronomy. A majority of astronomers made massive advances for their time. Ptomely, Nicolaus Copernicus, Tycho Brahe, and Galileo all were known for their advanced thinking. Their theories were so advanced for their time, that it typically got them in trouble with either the government or the church.

Myths are not dissimilar to fairy tales, legends, and sagas, but its period is distinctly different from usual existential time. It is considered as an expression of childhood experiences, and it also explains the origin and meaning of the world. According to Long (1994), “The term mythology may describe a certain body of myths, for example, Greek, African, or Scandinavian, or it may refer to the study of myths” (p.694). These collections of narratives are superior when it comes to influencing different areas of knowledge. There are numerous types of mythology, but Ancient Greece is the one that has given an immense influence on modern society.

William Hershel’s motivation was “piqued by two developments. One was his systematic examination of the clusters and nebulae catalogued by the French comet hunter, Charles Messier, in 1782 and 1783” (source A).Herschel built upon the work of this French astronomer and developed better telescopes that clarified and answered research and questions posed by Messier. Clearly Herschel’s motivation was to expound, rectify, and discover answers about the universe and give them to the world. He was also influenced by the surprising results his sister Caroline was able to conjure by studying the sky with a telescope William built for her. He believed that “if Caroline could find new objects with her small telescope, a larger instrument, deliberately designed to search the skies, would reveal many more” (source A). I find his motivation to be really pure scientific interest in learning more about the natural world.

In space there are many galaxies. In our galaxy, the Milky Way Galaxy we have the Solar System. The Solar System is made of 8 planets, not including Pluto because we are not sure if it counts. There is also the Sun and many, many moons that revolve around planets. Also in our Solar System there is the asteroid belt and much much more. We are currently trying to study all of the planets by sending an AI. But we need to start focusing on one planet, and that planet I believe should be Pluto.

Sir Isaac Newton Sir Isaac Newton discovered and made us understand many things about gravity. Sir Isaac was a very famous man, many people looked up to him and were inspired by him. He was mostly known for his Law of Gravitational Force, as well as developing the three laws of

Eighth and last planet from the Sun; Neptune was discovered in a joint British-French-German effort with Johann Gottfried Galle, Urbain Le Verrier and John Couch Adams in 1846. Neptune was officially named after the Roman god of the sea due to its blue coloration not long after the original name Le Verrier; suggested by Galle, was declined by the international astronomical community. This interesting ice giant has had some major scientific theories, findings, and accomplishments since its discovery over a century ago which will be further discussed in this report.

Sir Issac Newton and Galileo Galilei were two of the most leading scientist of 17th century. Unfortunately, the two were never able to work together as Issac Newton was born the same year Galileo died, 1642. One thing is for sure, between the two there was a storm of scientific revolution under way. I will begin with the earlier revelations of Galileo.

Aristotle’s initial model of the universe was that of a gigantic sphere, of which the earth is the core. Other spheres circumscribe the earth, and, with the exception of the innermost sublunary circles, these rotate in the westward direction of the outermost sphere, returning to their original angles in a span of twenty-four hours. The sublunary circles, in increasing proximity from the earth, are comprised of the Greek elements of water, air, and fire. The fourth to ninth circles contain the planets Moon, Sun, Mercury, Venus, Mars, Jupiter, and Saturn, respectively. The outermost circle, called the primum mobile, carries the stars and the other heavenly bodies. The rotation of an outer sphere, in this model, is what influences the movement of an inner sphere—the movement of an inner circle is influenced by the circle directly above it. After a while, however, Aristotle realized a few points of error in this overly simplistic system. He saw it odd for the lagging movement each circle to be influenced by that of an outer circle, conveniently forming a 23.5º angle (de Schrijver, 26-7).