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Million Years Ago 65 Million Years
2,114 wordsThe "Nemesis Theory" was an outgrowth of the discovery of Alvarez et al. , that the impact of a large (10 km diameter) comet or asteroid was responsible for the great mass extinction that took place 65 million years ago. Studies of the fossil record by Dave Raup and Jack Sepkoski shows that this was not an isolated event, but one of several mass extinctions that appear to occur on a regular 26 million year cycle. Their original paper analyzed marine fossil families, and was published in the Proc...
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Billion Years Ago Carbon Dioxide
1,230 wordsOur understanding and our modern perception of our solar system, the Milky Way, has been drastically reshaped from the corresponding perception of only a few hundred years ago. Our Solar System, the Milky Way is probably about 4 - 5 billion years old. Only in the last 400 years or so have we realized that the earth is not the "center", and that in the Universe alone there is an immense 200 billion "Suns" in a galaxy like our own. Although the origin of the solar system is uncertain, most scienti...
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Surface Of Mars Olympus Mons
1,529 wordsNamed after the Roman God of war, Mars has sparked and sustained curiosity than any other planet in our solar system. Astronomers and Geologist have studied the surface of Mars dating back to 1965 when Mariner 4 swept by the planet. Photographs of the planet showed a barren surface scarred by numerous craters. It wasnt until 1976 that scientist got their first glimpse of the Martian Landscape from its surface. As we take a closer look at Mars we may find many similarities as well as differences ...
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Center Of The Universe Tycho Brahe
1,164 wordsIn modern day astronomy and the study of the universe, individuals usually come up with predictions and then gather information and data in order to prove or disprove their hypothesis. Other astronomers in the history of astronomy did the same and came up with their own conclusions based on the data they collected. Some of their predictions were correct, and some were way off, but for the most part they progressed the study of the universe to the point where society is today. Astronomers such as...
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Southern Hemisphere Magnetic Field
1,422 wordsJupiter, the largest of the Jovian planets, reigns supreme throughout the solar system. Named after the Roman god Jove, the ruler of Olympus; "Jupiter is the fifth planet from the sun and is also the largest planet in the Earth's solar system. It is 318 times more massive than Earth and is two thirds of the planetary mass in the solar system. Jupiter's surface, unlike earth, is gaseous and not a solid. It is about 90 % hydrogen and 10 % helium with traces of methane, ammonia, water and rock. Jup...
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Active Volcanoes Solar System
1,415 words... of the process by which Jupiter itself formed. " (Fimmel) "Accretion is the accumulation of dust and gas into larger bodies. " (Astronomy) Ganymede is the largest satellite in the solar system; with a diameter of 3, 268 mi (5, 262 km), it is larger than the planet Mercury. In 1979 Io was observed by Voyager I and II and was found to have several active volcanoes actually in eruption during the spacecraft flyby. Io is the innermost of the Galilean satellites. Io's size and density is very sim...
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Age Of Exploration Holy Scripture
1,512 wordsIn 1632, Galileo Galilei published his book "Dialogue Concerning the Two Chief World Systems. " As innocent as this may seem, the implications that were associated with the publishing of the book were soon evident. In the time prior to the publishing of the book, Galileo had been warned several times not to publish it by the Catholic Church. The book was a fictitious dialogue between three men, whose purpose was to discuss two theories of Planetary Motion. The theory that Galileo was advocating ...
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Gas And Dust Nuclear Fusion
991 wordsAn Introduction to World History. "Any scientist, I think, will agree that in a hundred years time, many of the details of the story we tell now may look kind of cute and naive, because well have moved on beyond them. But if you happen to live now, " he concludes, "this is the best story going. " said David Christians and it is really true. We lived in a beautiful world but dont know a lot about cosmology, geology, archeology, and population and environmental studies. Today with the help of Davi...
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Center Of The Universe Tycho Brahe
1,176 wordsIn modern day astronomy and the study of the universe, individuals usually come up with predictions and then gather information and data in order to prove or disprove their hypothesis. Other astronomers in the history of astronomy did the same and came up with their own conclusions based on the data they collected. Some of their predictions were correct, and some were way off, but for the most part they progressed the study of the universe to the point where society is today. Astronomers such as...
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Gas And Dust Carbon Dioxide
1,584 wordsAsteroids sling through space, celestial debris of diverse origins, leftovers from the formation of the solar system, broken offshoots of parental asteroids or comets that have lost their glow. But if an asteroid were to smash into Earth, the result would mean a global catastrophe and life on our Planet could come to an end. The explosion would approach that of a million megatons of TNT- sixteen hundred times greater than the most powerful nuclear weapon ever tested (Barnes-Svarney 234). Asteroi...
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Solar System Million Miles
1,320 wordsEarths Beyond Earth: The Search for Other Worlds In early 1990, the first extrasolar planet was detected, surprising everyone by its strangeness. More planets have now been discovered outside our solar system than in it. These planets present many great mysteries to the astronomical world. Extrasolar planets are planets that exist outside our solar system; they are orbiting a star other than our Sun. So far, eighteen have been found, all of them defying well-established theories about planets an...
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Life On Earth Outer Planets
1,123 wordsAs Extraterrestrial Life Extraterrestrial life As biologists learn about life on Earth in all its diversity, and at the rate that new planets are being discovered the search for life elsewhere grows more steadily pressing. We have discovered organisms on the Earth that seem tenacious and tough almost to a fault; they thrive in the most seemingly adverse conditions imaginable, and organisms so fragile and specialized so as to exist in only the most isolated and pristine environments. With the kno...
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Nicolaus Copernicus Galileo Galilei
3,159 wordsThe impact of the Heliocentric Theory Heliocentric: Relating to the sun as a center; appearing as if seen from the suns center. (Webster, 447) The heliocentric theory was first introduced to the world by a Polish astronomer named Nicolaus Copernicus. Copernicus published his views on the heliocentric theory in his book Commentariolus, in 1514, which sparked the time period now known as the Copernican Revolution. Heliocentrism was proven true by the discoveries of Galileo, Kepler, and Newton; thr...
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Solar System E Mail
512 wordsE-mail: Help By: TULU E-mail: The urge to explore and search the unknown is part of human nature and has led to many of the most important changes in our standard of living. Searching and exploring enriches our spirits and reminds us of the great potential of achievement. The drive to develop the next frontier has also been a fundamental part of the heritage of the people of the world. Every year, billions of dollars are spent on the exploration of space. Many citizens doubt the necessity to res...
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Earths Rotation Solar Wind
1,404 wordsTHE MOON Called Luna by the Romans, Selene and Artemis by the Greeks, and many other names in other mythologies. The Moon, of course, has been known since prehistoric times. It is the second brightest object in the sky after the Sun. As the Moon orbits around the Earth once per month, the angle between the Earth, the Moon and the Sun changes; we see this as the cycle of the Moons phases. The time between successive new moons is 29. 5 days (709 hours), slightly different from the Moons orbital pe...
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Billion Years Ago Life On Mars
1,736 wordsIf there was a wet climate on Mars in the past, as the channels imply, perhaps there was lifeform as well; could life, in some form, remain in the martian soil today? The time has come for America to commit itself to a bold new venture in space: the human exploration and settlement of Mars. Were ready. (Zubrin) Robert Zubrin, a reporter for USA Today, made that bold statement in April of this year. His article goes on to defend the human adventure to Mars why we should do it, how to do it. But o...
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Time It Takes Surface Of Mars
1,058 wordsMars is the fourth planet from the sun at about 228 million-km (141 million miles) and the last terrestrial planet from the sun. The next five planets in order from the sun are gaseous. Mars follows closely behind Earth but is comparatively smaller, with about half the diameter of Earth and about one-tenth of Earth s mass. Thus the force of gravity on Mars is about one-third of that on Earth. Though it is much smaller, Mars does have the same surface land area as Earth. Other than Earth, Mars po...
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Center Of The Universe Solar System
413 wordsv A Florentine philosopher, physicist, and inventor. This is a lot of work to do in one life time. Galileo Galilei did all that and even more. He is most commonly remembered for his condemnation by the Holy Office as a result of his attempting to prove the Copernican theory of the universe. Galileo was born on February 15, 1564, in Pisa, Italy. He died in Florence, Italy, on January 8, 1642. He first got investigated by th Congregation of the Holy Office on February 19, 1616. Galileo acted abrup...
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Charleston S C Volcanic Eruptions
2,884 wordstrembling or Natural Disasters earthquake, trembling or shaking movement of the earths surface. Most earthquakes are minor tremors. Larger earthquakes usually begin with slight tremors but rapidly take the form of one or more violent shocks, and end in vibrations of gradually diminishing force called aftershocks. The subterranean point of origin of an earthquake is called its focus; the point on the surface directly above the focus is the epicenter. The magnitude and intensity of an earthquake i...
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Space Exploration Upper Atmosphere
1,145 wordsThe Space Race Space Exploration The urge to explore the unknown is part of human nature and has led to many of the most profound changes in our standard of living. It enriches our spirits and reminds us of the great potential of achievement within us all. The drive to develop the next frontier has also been a fundamental part of the heritage of the people of the world. The physical challenges and costs of space exploration also serve as a natural catalyst for peaceful, international cooperation...
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