IAmA Smithsonian meteorite scientist. Ask me anything!
Sorry, ladies and gents, but my fingers are now ground down into nubs and I need to stop. Thank you for your questions!
I am Dr. Marc Fries, a senior scientist at the Planetary Science Institute in Tucson, Arizona, and a visiting scientist at the Smithsonian Institution. I study meteorites and early Solar System formation and am here to answer any questions you may have about the meteor over Russia, the "near miss" by asteroid 2012 DA14, or any other questions you may have about meteors and meteorites.