The Astronomy Center website will be unavailable Friday evening through Saturday afternoon as electrical work occurs in the American Center of Physics server room. Down time will begin at 6PM Eastern Time on Friday. Service is expected to resume by 6PM on Saturday, July 30.
This site offers information about presolar grains. It discusses what they are, how to identify them, the different kinds, and what can be learned from presolar grains. If you need more information there are additional links to go to.
%0 Electronic Source %A Nittler, Larry R. %D 1999 %T Presolar Grains in Meteorites %V 2016 %N 28 July 2016 %9 text/html %U http://www.dtm.ciw.edu/users/lrn/psg_main.html
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