Analyzing Next to Nothing

Astronomy and Astrophysics – Astronomy

Scientific paper

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Astromaterials, Meteorite, Cosmic Dust, Interplanetary Dust, Asteroid, Comet

Scientific paper

Analytical techniques have advanced so far that it is possible to slice up a sample only 10 micrometers across (with a mass of only a billionth of a gram) so that a dozen microanalytical techniques can be used to extract fascinating, crucial information about the sample's history. This astonishing ability is useful in analyzing interplanetary dust collected in the stratosphere, tiny interstellar grains in meteorites, sparse and wispy weathering products in Martian meteorites, and samples to be collected and returned to Earth by current and future sample return missions from comets, asteroids, Martian moons, and Mars. The importance of the array of techniques available to cosmochemists has been documented by Michael Zolensky (Johnson Space Center), Carle Pieters (Brown University), Benton Clark (Lockheed Martin Astronautics, Denver), and James Papike (University of New Mexico), with special attention to sample-return missions.

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