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Search results 431 - 440 of 859 matching essays
- 431: Do UFOs Exist?
- ... encounters, and abductions. At least 90% of UFO sightings can be identified as conventional objects, Although time consuming investigations are necessary for such identification. The objects most often mistaken for UFOs are bright planets and stars, peculiar clouds, birds, aircraft, balloons, kites, aerial flares, meteors and satellites. Between 1647 to 1969 at total of 12,618 reports have been received concerning unidentified flying objects, of which 701 of the reports (5 ...
- 432: Perception: Seeing is Believing - UFOs
- ... flat object, man has had a lust and curiosity about space and the bodies that exist in it. Early astronomers trying to grasp the incomprehensible mysteries of the universe would study the patterns of the stars and planets to try to put this massive puzzle together. In their studies history has recorded sightings of objects that didn't hold to any pattern or set movement supposedly proved to be correct. Objects ...
- 433: Oxygen
- ... as the new basis. Sources Oxygen is the third most abundant element found in the sun, and it plays a part in the carbon-nitrogen cycle, the process once thought to give the sun and stars their energy. Oxygen under excited conditions is responsible for the bright red and yellow-green colors of the Aurora. A gaseous element, oxygen forms 21% of the atmosphere by volume and is obtained by liquefaction ...
- 434: The History of Carbon
- ... A. Inorganic B. Organic IV. The Carbon Cycle IV. Conclusion Carbon, an element discovered before history itself, is one of the most abundant elements in the universe. It can be found in the sun, the stars, comets, and the atmospheres of most planets. There are close to ten million known carbon compounds, many thousands of which are vital to the basis of life itself (WWW 1). Carbon occurs in many forms ...
- 435: The Comparative Abundance of The Elements
- ... are all about 0.003% of the elements in the universe. The abundance of hydrogen and helium in this cosmic distribution of the elements, proves all the elements were formed by nuclear fusion in the stars, for example the Sun. Hydrogen is a basic material for which the other elements are gradually built.
- 436: The Noble Gases
- ... by using spectral analysis to detect helium in the sun¹s spectrum. Helium is not found a lot on the earth because gravity cannot keep helium from escaping to space. Helium is found mostly in stars, where it goes through nuclear fusion with hydrogen. Most Helium comes from natural gas taps in North America. It is used in balloons and divers use it with oxygen to breath easier and to not ...
- 437: Asimov On Chemistry by Isaac Asimov
- ... closest he compared is ammonia due to similarities in water they share. Asimov, a detailed science fiction author, also metions such alterantives as vaporous, metal, energy, and mental beings. These would live in space, energy, stars, hyperspace. GEOCHEMISTRY Recipe for a Planet This was written when the united states and the former Soviet Union were attempting to drill into the center of the Earth. This project, Mohole ,has long since been ...
- 438: Scenes of Nature
- ... scenes to look at. The sky is a very captivating scene. The sunsets are absolutely breathtaking. The clouds can form many different and interesting shapes. At night the sky becomes enchanting and glorious. When the stars are out the sky is undeniably exquisite. The skys deep shades range from blue at dawn to deep oranges and purple at dusk. The sky scenes are genuinely picturesque. The forest changes it scenery in ...
- 439: UFO's: Seeing is Believing
- ... flat object, man has had a lust and curiosity about space and the bodies that exist in it. Early astronomers trying to grasp the incomprehensible mysteries of the universe would study the patterns of the stars and planets to try to put this massive puzzle together. In their studies history has recorded sightings of objects that didn't hold to any pattern or set movement supposedly proved to be correct. Objects ...
- 440: The Big Bang
- ... end of the contraction leaps outward in another great expansion.6 Such a universe is said to be closed, and pulsating. If the universe has achieved escape velocity, it will continue to expand forever. The stars will redden and die, the universe will be like a limitless empty haze, expanding infinitely into the darkness. This space will become even emptier, as the fundamental particles of matter age, and decay through time ...
Search results 431 - 440 of 859 matching essays
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