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Free research papers and essays on topics related to: asteroids

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  • Asteroids - 1,203 words
    Asteroids In our solar system today there are over 30 000 asteroids flying around in all directions colliding with other asteroids and planets not caring about the destruction they might convey. Our planet Earth is caught right in the middle of all of this action and is liable to entire extinction of any life forms on the planet if a large enough asteroid crosses its path. Any one single asteroid has the possibility to erase thousands of years of history and wipeout the human race as we know it. Asteroids are large or small chunks of rock and metal flying around space up to speeds of 80 000 km/h. These chunks were believed to have formed millions of years ago during the big bang. These rocks ...
    Related: asteroids, human race, solar system, planet earth, mankind
  • Asteroids A Planet Killer - 516 words
    Asteroids A Planet Killer The universe is a shooting gallery and earth is the bullseye. The earth is always under threat of a doomesday asteroid that will wipe out civilization. There are over one thousand asteroids traveling toward earth and only three quarters are accounted for. Where are the other one forth? No one knows because the government doesn't fund NASA astrologists enough to cover the astroids. Just one impact could end civilization as we know it. No matter where it hits everything would die, even bacteria. To give an estimate how much is spent on asteroid detection. It is said to be less than the cost to operate a single McDonald's franchise. Total disaster would occur no matter ...
    Related: asteroids, killer, planet, appalachian mountains, atlantic ocean
  • Astronomers Have Announced That A Large Asteroid On A Trajectory Heading Toward The Vicinity Of Earth Will, In Fact, Pass No - 479 words
    Astronomers have announced that a large asteroid on a trajectory heading toward the vicinity of Earth will, in fact, pass no closer to the planet than about 600,000 miles (about 966,000 kilometers). The announcement brought sighs of relief to the general public and scientific community, both of which had been in a frenzy since an earlier announcement suggested the space rock would pass much closer and possibly collide with the Earth. Such an impact would have catastrophic implications for the planet. Much evidence exists to indicate that ancient bombardment of the Earth by asteroids and comets may have precipitated mass extinctions of dinosaurs and other species. An announcement on March 11 ...
    Related: heading, trajectory, global cooling, general public, announcement
  • Extraterrestrials - 1,262 words
    Extraterrestrials Can the Earth be the only place in the Universe that harbors life? Most astronomers don't believe this is true. Certain statistics in the Universe provide evidence that living beings may be common place through out the universe, on planets of other stars besides the sun. In this paper I plan to discuss the various viewpoints of those that believe that extraterrestrials exist and have even been visiting Earth, and the viewpoints of skpetics that believe that aliens don't exist and have not been visiting Earth. To get into the topic we must first start at the base of the subject. First the question must be dealt with of life being only indigenous to planet Earth. One of the m ...
    Related: extraterrestrial life, human race, earth science, milky way galaxy, debate
  • From The Big Bang To Life On Earth - 1,239 words
    ... gets more complicated. Two-thirds of solar type stars (M class) in our Milky Way galaxy are members of binary or multiple star systems. When two stars are orbiting close together, their planets orbit both stars. When the stars are far apart, their planets only orbit one of them. Some problems with this situation include: Planets may not be able to form unless the stars are at least 50 AU away (1 AU = distance from the Earth to the sun) and stable orbits can only be achieved where companion stars are at less than 20 million miles apart or farther than one billion miles.3 A planet's orbit pattern is also of concern. Earth's orbit is very stable and only has a small degree of ellipticity. ...
    Related: bang, extraterrestrial life, west virginia, time zone, galactic
  • Is There Another Earth Out There - 1,049 words
    Is There Another Earth Out There? Is There Another Earth Out There? (adopted from an article by Guillermo Gonzalez, Donald Brownlee and Peter D. Ward, Refugees for Life in a Hostile Universe, Scientific American, October 2001) Is there life on other planets? Science has been trying to answer this question for a long time. In the article, the authors argue that it is highly improbable that complex life forms exist in our galaxy. To quote the authors: "Researchers are now casting a skeptical eye on musings about the prevalence of intelligent life throughout the Milky Way". Furthermore, according to the article, not only may most of the solar system be unfriendly to multi-cellular or complex or ...
    Related: ozone layer, building blocks, solar system, planet, casting
  • Jupiter Moons - 1,310 words
    ... art 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 similar to our own Moon, and it the most dense of the Galilean satellites. "When the Galileo spacecraft flew by Io in December 1995; it discovered that Io has an iron inner core. A high-altitude ionosphe ...
    Related: jupiter, global expansion, desk reference, public library, largely
  • Life On Other Planets - 1,451 words
    Life On Other Planets Life On Other Planets Life exists on other planets. Out of the billions of solar systems, there has to be a chance that a least a couple planets have the ability to support life. Life may have developed on the planets like life developed here, but it may have developed differently also. Are they more intelligent than we are or are they single-celled organisms? Do they have broadcast capabilities, so they can contact us? It goes back to how life on Earth started. In the early days of Earth, the atmosphere was just carbon monoxide, but algae developed into plants which produced oxygen (Rather and Bowen 2). That brings us to the question of how the algae got here. The answ ...
    Related: planets, methods used, carbon dioxide, good idea, gravitational
  • Mass Extinctions On The Earth - 589 words
    Mass Extinctions On The Earth Mass Extinctions on the Earth Intro: Sixty-five million years ago, some phenomenon triggered mass extinctions on the lands and in the oceans so profound that they define the geological boundary between the older Mesozoic Era, often called the Age of Reptiles, and the modern Cenozoic Era, the Age of Mammals. On a finer scale, the extinctions define the boundary between the Cretaceous (geological symbol, K), and Tertiary (T) periods. This mass extinction is usually referred to as the K-T extinctions. The dinosaurs became extinct during the K-T mass extinction. To examine how the K-T extinctions fit into a broader perspective, please see the The cause of the K-T ex ...
    Related: earth science, mass extinction, climate change, geological survey, enrichment
  • On December 10, 1986 The Greater New York Section Of The American Institute Of Aeronautics And Astronautics Aiaa And The Engi - 1,034 words
    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 be accelerated to orbital velocity. Related to this is that the traditional way to create things in space has been to manufacture them on Earth and then launch them into orbit aboard l ...
    Related: aeronautics, american, american institute, astronautics, institute, research institute, york academy
  • On December 10, 1986 The Greater New York Section Of The American Institute Of Aeronautics And Astronautics Aiaa And The Engi - 1,032 words
    ... ucted outside of Tucson, Arizona. When it is completed eight people will inhabit it for two years entirely sealed off from the outside world. One of the objectives of this experiment will be to prove the concept of long-duration closed cycle life support systems. As the foregoing illustrates, MaryniakUs primary focus was upon mining the planets as a source for materials to use in space. Dr. PetersonUs principal interest, on the other hand, was the potential application of techniques and equipment developed for use on the Moon and the asteroids to the mining industry here on Earth. Dr Peterson began his presentation by noting that the U. S. mining industry was in very poor condition. In p ...
    Related: aeronautics, american, american institute, astronautics, institute
  • Origin Of Solar System - 1,786 words
    Origin Of Solar System The Origin of the Solar System One of the most intriguing questions in astronomy today is the how our solar system formed. Not only does the answer add insight to other similarly forming systems, but also helps to satisfy our curiosity about the origin of our species. Although it is highly unlikely that astronomers will ever know with absolute scientific certainty how our system originated, they can construct similar theoretical models with the hopes gaining a better understanding. A basic understand of the current physical aspects of our solar system are helpful when trying to analyzing its origin. Our solar system is made of the Sun, nine major planets, at least sixt ...
    Related: origin, solar, solar system, early stages, long history
  • Planet X - 577 words
    Planet X Planet X Is Pluto really a planet? Researchers have been trying to determine whether Pluto is really big enough to be a planet. Over the last few years, the gathered information on Pluto and the discovery of an increasing number of other objects in the outer solar system have been discussed within a group of astronomers (called minor-planets). The planet Pluto is not given the respect of other planets and some have designation to be changed to minor planet. Astronomer Brian Marsden of Harvard Smithsonian Center said if Pluto were discovered seventy years ago, it would be considered a minor planet number. A minor planet is a term used to describe asteroids and most astronomers agree ...
    Related: planet, hubble space, space telescope, hubble space telescope, roughly
  • Solar System Planets - 1,301 words
    Solar System Planets The earth is only one small planet in an extremely large system of planets, satellites, asteroids, meteors and comets that revolve around the sun. This system is referred to as the solar system. A planet is defined as a "celestial body that revolves around a central star and does not shine by its own light " (Grolier,1992). The only planetary system known to our civilization is our solar system. It is made up of nine planets that differ greatly size and physical characteristics. The nine major planets in our solar system are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto. There are also many other minor planets which are also in our solar system, ...
    Related: planets, solar, solar system, greenhouse effect, dust storms
  • Space Exploration - 936 words
    Space Exploration Space Exploration Since the beginning of time, man has been fascinated with the stars and sky. From the time the first man took his first step on the moon, space exploration has been growing and expanding. More and more people are coming up with new ways on how to study the universe. Hence, the more time spent on studying the sky, the more that we will obviously know. So, it would be safe to say that now is a great time to continue the exploration of space. The 1990s contributed to the study of space with new technology, intelligent astronauts, and future ideas. During the 1990s new technology and space crafts were introduced. There have been numerous space launches through ...
    Related: exploration, space exploration, space program, space shuttle, space station
  • The Solar System - 1,185 words
    The Solar System The Solar System consists of the Sun, the nine planets and their satellites; the comets, asteroids, meteoroids, and interplanetary dust and gas. It is composed of two systems, the inner solar system and the outer solar system. The inner solar system contains the Sun, Mercury, Venus, Earth and Mars. The outer solar system contains Jupiter, Saturn, Uranus, Neptune and Pluto. The inner planets are relatively small and made primarily of rock and iron. The asteroids orbit the sun in a belt beyond the orbit of Mars, tumbling and sometimes colliding with one another. Made mostly of rock and iron, the asteroids may be the remnants of a planet that never formed. The outer planets, wi ...
    Related: solar, solar system, solar wind, greenhouse effect, carbon dioxide
  • The Solar System - 1,141 words
    ... re. However, the earth is not an exact sphere, being slightly flattened at the poles and bulging at the equator. The earths surface is divided into dry lands and oceans. Surrounding the earth is an envelope of gases called the atmosphere, which is mostly made of nitrogen and oxygen. The Earth is divided into several layers which have distinct chemical and seismic properties. The crust varies considerably in thickness; it is thinner under the oceans, and thicker under the continents. The inner core and crust are solid; the outer core and mantle layers are plastic or semi-fluid. Most of the mass of the Earth is in the mantle, the rest is in the core, and the part we inhabit is a tiny fract ...
    Related: solar, solar system, carbon dioxide, southern hemisphere, planets
  • The Solar System - 1,154 words
    The Solar System Assignment 1: The Solar System The solar system consists of the Sun; the nine planets, 67 satellites of the planets and a large number of small bodies (comets and asteroids). The inner solar system contains the Sun, Mercury, Venus, Earth and Mars: The planets of the outer solar system are Jupiter, Saturn, Uranus, Neptune and Pluto: The orbits of the planets are ellipses with the Sun at one focus, though all except Mercury and Pluto are very nearly circular. The orbits of the planets are all more or less in the same plane (called the ecliptic and defined by the plane of the Earth's orbit). The ecliptic is inclined only 7 degrees from the plane of the Sun's equator. Pluto's or ...
    Related: solar, solar system, solar wind, early stages, atmospheric pressure
  • The Solar System - 1,129 words
    ... l planets. One being Olympus Mons, the largest mountain in the Solar System rising 24 km (78,000 ft.) above the surrounding plain. Like Mercury and the Moon, Mars appears to lack active plate tectonics at present; there is no evidence of recent horizontal motion of the surface such as the folded mountains so common on Earth. Jupiter Jupiter is named after the king of the Roman gods. It is the largest planet in the Solar System, the fifth planet from the Sun and the first of the outer planets Jupiter has had a dominant effect on a large part of the Solar System. It is likely that Jupiter's huge gravity has prevented a planet from forming in the area now occupied by the Asteroid Belt. Jupi ...
    Related: solar, solar system, speed limit, greek philosopher, contrast
  • Tsunami - 330 words
    Tsunami When one thinks of all the natural disasters, that could effect the Maryland and Washington D.C. area they often think of hurricanes and snowstorms. They often forget about the possibility of a tsunami. A tsunami, often referred to as a "tidal wave", is a wave train, or series of waves, generated in a body of water by an impulsive disturbance that vertically displaces the water column. Being located on the Atlantic coastline the possibility of a tsunami is very much a reality. But have you ever wanted to know what can cause waves of this magnitude? Tsunamis are usually caused by earthquakes that occur on the seafloor or in coastal areas. The energy generated by the earthquake is tran ...
    Related: tsunami, natural disasters, tidal wave, tidal, cosmic
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