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Search results for: comet in all categories
1438 results found.
144 pages of results. 681. Only Solar Systems with Jupiters May Habour Life [Journals] [SIS Internet Digest]
... in Earth's seawater is the key clue as to the source of the oceans. Seawater contains 150 ppm deuterium, or heavy hydrogen. That's about five or six times the deuterium-to-hydrogen ratio found in the sun and in the solar nebula gas, known from measurements made at Jupiter. But it's only about a third of the deuterium-to-hydrogen ratio measured in comets Halley, Hyakutake, and Hale-Bopp,. The findings contradict the popular idea that comets supplied the Earth with oceans. "If deuterium abundances in the asteroid belt are correctly reflected by the meteorites, planetary embryos sent careening by Jupiter into the Earth are by far and away the biggest contribution to Earth's water, '" Lunine said. ...
682. Mythopedia [Journals] [SIS Internet Digest]
... single visual prototype of the myths was inspired by a series of catastrophical events that took place in the solar system prior to the onset of civilisation. (h ) Plasma science: This series of events can be reconstructed in great detail with the help of the mythical record and may be explained by reference to plasma phenomena operating when a giant comet or planet approached the earth. (2 ) Mythomatics (essays on structural mythology). (a ) Celestial Fireworks: a graphic model proposed to explain the origin of myth, ritual, and symbolism, including a general slideshow, a comparison of the model with traditional art, and an approach to the anatomy of the configuration. ...
683. Cosmos & Chronos Symposium report [Journals] [SIS Internet Digest]
... explanation for permafrost. He dismissed the polar configuration as "impossible", then placed the earth on a large eliptical orbit which brought it close to all of the inner planets in turn (even Mercury.) Dwardu Cardona gave a paper similar to the one he printed on this forum about the history and development of the name of the comet associated with the the Exodus. He pointed out how that comet's name (Typhon in Greek) came to be confused because the Greeks claimed it was the comet named after the Egyptian king, who was Set (Seth?). ...
684. Forum: Electric Universe [Journals] [SIS Review]
... So at first sight we might expect the spacecraft to not respond to the Sun's electric field. The astronomer, Tom Van Flandern, has made the point that the force seemed only to operate on very small objects, otherwise planets and asteroids should show the effects too. That seems unlikely. The distinction should be made that spacecraft, like comets, are charged bodies travelling with high radial velocity relative to the Sun and both suffer non-gravitational' forces. It seems their radial motion creates a cometary plasma sheath that results in a net electric force on the comet/spacecraft that steadily decelerates it in the constant external field. If so, this plasma discharge effect distinguishes Juergens' electrical ...
685. Earth has Flipped Over in Space Many Times [Journals] [Catastrophism & Ancient History]
... time. These can be explained, Warlow maintains, by the Earth's rolling over, making the sun seem stationary and making, night on the opposite side of the planet seem extremely long. What caused the axis to shift? Probably a "large cosmic body" either passing close to Earth or possibly even hitting it, Warlow believes. Comets and asteroids are likely candidates. But it might also have been a foreign planet entering the solar system, wandering past Earth, and eventually settling down into orbit around the sun. The force necessary to topple the Earth is not as great as most people think, Warlow says. His calculations show that a comet or some larger body ...
686. Einstein and Relativity [Journals] [SIS Review]
... In the humanised version of the tale a herdsman on the cliffs of Leinster took fright and hastily reported to the king, a mountain was heading towards them - with a forest of trees behind him' (the lances of the warriors in the army of Bran). The mountain was a large lump in the sky, such as a comet - with a meteoric swarm riding in its wake. Only seven survived the encounter and Bran was mortally wounded [2 ]. He asked his companions to cut off his head after he died and take it on their travels. He made prophecies, entertained them - with poetry, wit and an eloquent turn of words. Eventually his ...
687. Hannes Alfvén (1908-1995) [Journals] [SIS Internet Digest]
... thermonuclear fusion, hypersonic flight, rocket propulsion, and the braking of reentering space vehicles. At the same time, applications of his research in space science include explanations of the Van Allen radiation belt, the reduction of the earth's magnetic field during magnetic storms, the magnetosphere (a protective plasma envelope surrounding the earth), the formation of comet tails, the formation of the solar system, the dynamics of plasmas in our galaxy, and the fundamental nature of the universe itself. Alfvén was the first to predict (in 1963) the large scale filamentary structure of the universe, a discovery that confounded astrophysicists in 1991 and added to the woes of Big Bang cosmology. Hannes ...
688. Apocalyptic Imagery In Modern Political Spectacle [Journals] [SIS Review]
... structure of light towering thousands of feet above them while the rest of the sky is black. The people are like tiny ants underneath. Now let us do with Fig. 3 what we did with Fig. 2. Could we not see it, looking from the bottom up, as a superb diagram of a cometary impact? The comet or fireball or meteor with its fiery tails hits the Earth forcefully at the centre point, sending blasts of energy down into the ground, as in the lower part of the picture. (This would perhaps be clearer if we could draw a horizontal line across the picture, representing the ground, passing through the intersection of the beams ...
689. Nor Heaven Nor Earth Have Been at Peace: The Contemporary Foundations of Shakespeare's Cataclysmic Imagery [Journals] [Kronos]
... Nor Heaven Nor Earth Have Been at Peace: The Contemporary Foundations of Shakespeare's Cataclysmic Imagery Richard J. Jaarsma with Edward L. Odenwald I No one reading Shakespeare's plays can fail to be struck by the frequent, even obsessive reference to disturbances in nature. Thunder, lightning, and earth tremors precede the assassination of Caesar, while meteors and comets are so bright during the civil war that follows that Brutus needs no light by which to read an evening letter. A monstrous tempest shakes Britain as Lear rages insanely on the heath. Storms and earthquakes parallel the murder of Duncan, and nature's seasons are altered and reversed as Titania struggles with Oberon for possession of a changeling child. ...
690. The Gravitational-Electromagnetic Effects of Ultramassive Objects on the Solar System [Journals] [Kronos]
... the solar system as a whole, depending on the trajectory of the object in question. THE POSSIBILITY OF PLANETARY ENCOUNTERS WITH ULTRAMASSIVE OBJECTS The physics and mathematics of objects that produce impact craters on the Moon, Earth and inner planets are thought to be fairly well understood by astronomers.(4a) These objects are debris, asteroids, and comets travelling in highly eccentric orbits. Utilizing simple collision physics, the mean free times between collisions can be calculated. This theory supposedly accounts for the number of craters on the Moon, Mercury, and Mars. It is also used to arrive at approximate collision probabilities. Thus, scientists have been able to estimate the ages of some recent ...
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