Subject: Re: Moon Dust Argument ajs9462@sigma.tamu.edu (SIMON, ANTHONY JOE) writes: Hopefu

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From: Ron Dippold Subject: Re: Moon Dust Argument ajs9462@sigma.tamu.edu (SIMON, ANTHONY JOE) writes: >Hopefully, someone will be able to fill in all the details >and/or correct me where I'm wrong. From the (a) FAQ } - Lunar dust--only 1 to 3 inches, not 54 feet. The calculation you refer to is given by Henry Morris on pp. 151-153 of _Scientific Creationism_. It is based on a grossly erroneous figure of 14 million tons of meteoritic dust per year, quoted by Petterson in 1960. Morris misinterpreted Petterson's article. Petterson published a figure of 15 (not 14) million tons per year as an _upper limit_. In other words, Petterson said that the value is _not more than_ 15 million tons per year. He was not able to measure an actual value. Morris erroneously chose to interpret it to mean it was _equal_ to 14 million tons per year. Accurate values were measured in the late 1960's. The actual value is -much- lower than 15 million tons per year. Dalrymple gives the value of 22,000 tons per year, nearly 700 times smaller than your figure. That changes your 54 foot figure into about 2 cm, which is quite consistent with the amount of surface soil the astronauts found on the Moon (it was considerably more than 1-2 mm). My copy of "Everyman's Astronomy" indicates that the earth collects about 9000 kg per day from meteors of visual magnitude 5.0 or brighter. Assuming a typical rock density of 3 g/cc, this corresponds to an accumulation rate of one inch per 10 billion years. Unfortunately no data is presented for fainter meteors. I wouldn't be surprised to find accumulation rate of one inch per 10 billion years. Unfortunately no data is presented for fainter meteors. I wouldn't be surprised to find that the actual rate is one or two orders of magnitude higher, but "1 inch in 8000 years" is off by six orders of magnitude. A dust accumulation rate of "one inch per 8000 years" should create a spectacular yearround meteor shower, and cause severe pitting of the space shuttle windshields in just a single orbit. My quick estimates give values far higher than have been actually observed.

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