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Discuss the Origin of Water on Earth

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Covers 5 theories on the origin of water: Meteorites, Asteroids, Comets, Earths Mantle and other reactions.

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Discuss the Origin of Water on Earth
Topics this document covers:
Solar System Local Interstellar Cloud Local Bubble Planetary science Water Isotopes of hydrogen Hadean Origin of water on Earth Astrobiology 67P/Churyumov–Gerasimenko Comet Deuterium
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Topics this document covers:
Solar System Local Interstellar Cloud Local Bubble Planetary science Water Isotopes of hydrogen Hadean Origin of water on Earth Astrobiology 67P/Churyumov–Gerasimenko Comet Deuterium
Sample Text:
Despite this, the origin of water has been fiercely debated as new technologies are developed and subsequently utilised. Establishing the Earth's initial D/H ratio is crucial in understanding the possible origins of water. Subsequently, any theory of water transport to the Earth from space, or formation of water on Earth must account for this specific D/H ratio. Furthermore, conditions on Early Earth must be considered when analysing the preservation of surface water. Major theories of exogenous sources of water include delivery by comets from both the Oort Cloud and Kuiper belt, as well as asteroids and meteors. On the other hand, water might indeed have indigenous origins in the protosolar disc or even through reactions of silicon dioxide with hydrogen in the Earth...
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