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Estimates for their contribution to the total meteorite population vary between 85.7% [2] and 86.2%. [3] Their study provides important clues for understanding the origin and age of the Solar System, the synthesis of organic compounds, the origin of life and the presence of water on Earth.
CI chondrites contain between 17 and 22 weight % water- more water than comet 67P/Churyumov–Gerasimenko. [102] [103] [104] Their high porosity (of up to 30%) seems to be correlated to those facts. The water is mostly tied up in water-bearing silicates.
In addition, they contain water and minerals that have been modified by the influence of water. [2] The carbonaceous chondrites were not exposed to higher temperatures, so that they are hardly changed by thermal processes. Some carbonaceous chondrites, such as the Allende meteorite, contain calcium-aluminum-rich inclusions (CAIs).
The Winchcombe meteorite is a rare and pristine carbonaceous chondrite, and it likely holds clues about early Earth's composition—and where our water came from.
The meteorite struck Earth when it was still in its early years, a water world with only a few continents sticking out of the sea. In their fieldwork, Drabon said, they were looking for spherule ...
The space rock that hit a Gloucestershire town last year held water similar to our planet's oceans. Skip to main content. News. Need help? Call us! 800-290-4726. Login / Join. Mail ...
The 60-tonne, 2.7 m-long (8.9 ft) Hoba meteorite in Namibia is the largest known intact meteorite.[1]A meteorite is a rock that originated in outer space and has fallen to the surface of a planet or moon.
Claimed water at the lunar poles was, at first, attributed to comet impacts over the eons. This was an easy explanation. Subsequent analyses, including analyses of Earth-Moon isotopes versus comet isotopes, showed that comet water does not match Earth-Moon isotopes, while meteoritic water is very close.