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by sopchi
1299 days ago
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For those not familiar with meteorite identification: they can be tricky to tell apart from other rocks and random debris found on earth. I love this Professor's site [1], first attempting to deter people from sending him tons of useless rocks. Starts with some "Rude Admonishments" that are worth a read. His site is also at the top of the sites recommended by the Utah Geological Survey as resources for people who think they may have found a meteorite. [1] https://sites.wustl.edu/meteoritesite/items/what_to_do/ |
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This was interesting:
>The incandescent (glowing) period of a meteor is only a few seconds as it passes through the upper atmosphere. Although the exterior gets hot enough to melt during the incandescent phase, most of the hot material immediately ablates away (the “tail” of the meteor), so conduction of heat to the inside of the rock is inhibited. Also, rocks are not good conductors of heat.
Also explains a thought I had of how why water can be retained in a landing meteorite.