Theories Of The Origin Of The Moon

1585 words - 7 pages

Intro Sample...


The Moon is the only natural satellite of Earth. The distance from Earth is about 384,400km with a diameter of 3476km and a mass of 7.35*1022kg. Through history it has had many names: Called Luna by the Romans, Selene and Artemis by the Greeks. And of course, has been known through prehistoric times. It is the second brightest object in the sky after the Sun. Due to its size and composition, the Moon is sometimes classified as a terrestrial "planet" along with Mercury, Venus, Earth and Mars. Origin of the Moon Before the modern age of space exploration, scientists had three major theories for the origin of the moon: fission from the earth; formation in earth orbit; and formation far from earth. Then, in 1975, having... View More »

Body Sample...


In the years immediately following the Apollo project, this division of opinion continued to exist. One observer of the scene, a psychologist, concluded that the scientists studying the Moon were extremely dogmatic and largely immune to persuasion by scientific evidence. But the facts were that the scientific evidence did not single out any one of these theories. Each one of them had several grave difficulties as well as one or more points in its favor. In the mid-1970s, other ideas began to emerge. William K. Hartmann and D.R. Davis (Planetary Sciences Institute in Tucson AZ) pointed out that the Earth, in the course of its accumulation, would undergo some major collisions with other bodies that have a substantial fraction of its mass and that these collision would produce large vapor clouds that they believe might play a role in the formation of the Moon. A.G.W. Cameron and William R. Ward (Harvard University, Cambridge MA) pointed out that a collision with a body having at least the mass of Mars would be needed to give the Earth the present angular momentum of the Earth-Moon system, and they also pointed out that such a collision would produce a large vapor cloud that would leave a substantial amount of material in orbit about the Earth, the dissipation of which could be expected to form the Moon. The Giant Impact Theory of the origin of the Moon has emerged from these suggestions. These ideas attracted relatively little comment in the scientific community during the next few years. However, in 1984, when a scientific conference on the origin of the ...

Read More

Related Essays on Theories Of The Origin Of The Moon

  • The Moon Landing

    1003 words - 5 pages

    A race was on to put a man on the moon. President Kennedy had challenged the nation. It was the mission of Apollo 11 to land two men on the moon, then return them safely to Earth. It was one of the most historic events. It demonstrated what man can do with effort and ingenuity. A race was on to put a man on the moon. President Kennedy had challenged the nation. It was the mission of Apollo 11 to land two men on the moon, then return them safely to Earth. It was one of the most historic events. It demonstrated what man can do with effort and ingenuity. In President Ken

    View Document »

    The Meaning Of The Moon

    1005 words - 5 pages

    The moon is symbolic and takes on many meanings in “A Midsummer Night’s Dream” by William Shakespeare. As this essay on symbols in “A Midsummer Night’s Dream” seeks to point out, it is not simply part of the background of the play, it symbolizes love, lust, and dreaming and is seen as a powerful symbolic force that determines and affects human behavior and reactions. There are abundant examples of the moon as a symbol throughout “Midsummer Night’s Dream” by Shakespeare of celestial images, but the meaning is never static; the moon means different things to each character, depending on his or h

    View Document »

    Space Exploration And The Space Race

    3970 words - 16 pages

    The Space Race was a competition of space exploration between the United States and Soviet Union, which lasted roughly from 1957 to 1975. It involved the efforts to explore outer space with artificial satellites, to send humans into space, and to land people on the Moon. Though its roots lie in early German rocket technology and in the international tensions following World War II, the Space Race effectively began after the Soviet launch of Sputnik 1 on 4 October 1957. The term originated as an analogy to the arms race. The Space Race became an important part of the cultural, technological,

    View Document »

    The Cat And The Moon William Butler Yeats Natural World

    1266 words - 6 pages

    In 'The Cat and the Moon', Yeats uses descriptions of the natural world to move from the playful triviality of nature to using images of nature to question what we can and cannot know as humans. He challenges the outward simplicity of nature by reflecting it in his poem alongside suggestions that there may be something magical within nature that cannot always be seen on the surface. Throughout the poem, Yeats has chosen to use a very playful rhythm, like one expected of a nursery rhyme; simple and songlike. This rhythm is particularly noticeable in the opening of the p

    View Document »

    Titan

    4228 words - 17 pages

    Titan (pronounced /ˈtaɪtən/ TYE-tən, or as Greek: Τῑτάν) or Saturn VI is the largest moon of Saturn, the only moon known to have a dense atmosphere,[6] and the only object other than Earth for which clear evidence of stable bodies of surface liquid has been found.[7] Titan is the sixth ellipsoidal moon from Saturn. Frequently described as a planet-like moon, Titan has a diameter roughly 50% larger than Earth's moon and is 80% more massive. It is the second-largest moon in the Solar System, after Jupiter's moon Ganymede, and it is larger by volume

    View Document »

    Life How Did It Start

    12277 words - 50 pages

    LIFE is everywhere around us. It is evident in the humming of insects, the singing of birds, the rustlings of small animals in the underbrush. It exists in the icy polar regions and in parched deserts. It is present from the sea’s sunlit surface to its darkest depths. High in the atmosphere tiny creatures float about. Beneath our feet untold trillions of microorganisms are at work in the soil, making it fertile for the growing of green plants, which sustain other forms of life. Earth is packed with life so abundant and varied as to stagger the imagination. How did it all start? This planet

    View Document »

    Neil Armstrong

    1263 words - 6 pages

    A Hero That Made An Impact Neil Armstrong was born on August 5, 1930, in the town of Wapakoneta, Ohio. Armstrong was brought into this world by his two caring parents, Stephen and Viola Armstrong. Armstrong announced to the world in 1969. With the leadership and courage he had he was positively going to change the future. Armstrong is known to be one of the greatest influences in history and has demonstrated courage, determination and confidence as he accomplished the intense and extreme goals throughout his life. Armstrong is a very generous, over-looking man that ha

    View Document »

    Earth

    4917 words - 20 pages

    Earth is the third planet from the Sun and is the largest of the terrestrial planets in the Solar System in both diameter and mass. It is also referred to as the Earth, Planet Earth, the World, and Terra. Home to millions of species,] including humans, Earth is the only place in the universe where life is known to exist. Scientific evidence indicates that the planet formed 4.54 billion years ago,and life appeared on its surface within a billion years. Since then, Earth's biosphere has significantly altered the atmosphere and other abiotic conditions on the planet, enabling the proliferati

    View Document »

    Pearl And The Pear Tree Katherine Mansfield S Bliss

    1106 words - 5 pages

    “Bliss” by Katherine Mansfield is filled with wonderful symbolism and underlying meaning. As the short story unfolds, it becomes quite clear that the majority of the symbols, depicted by Mansfield, work together to create an image of evolving life and female sexuality. The most prominent symbol is Bertha's perfect pear tree which is in full bloom. Bertha describes the tree in great detail referring many times to her own life in relation to the beautiful leaves and blossoms. Part way through the story, images of the moon begin to weave their way into the writing. The mo

    View Document »

    Mining In Sapce

    2123 words - 9 pages

    On December 10, 1986 the Greater New York Section of the American Institute of Aeronautics and Astronautics (AIAA) and the engineering section of the New York Academy of Sciences jointly presented a program on mining the planets. Speakers were Greg Maryniak of the Space Studies Institute (SSI) and Dr. Carl Peterson of the Mining and Excavation Research Institute of M.I.T. Maryniak spoke first and began by commenting that the quintessential predicament of space flight is that everything launched from Earth must

    View Document »

More Popular Essays

Research help is just moments away!