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Tests on extraterrestrial material<img alt="" src="https://www.cira.it/PublishingImages/meteorite%20dopo%20il%20test.jpg" style="BORDER:0px solid;" />https://www.cira.it/en/communication/news/test-in-ghibli-su-meteorite/Tests on extraterrestrial materialTests on extraterrestrial material<p style="text-align:justify;">In the Ghibli hypersonic facility, were successfully performed tests on meteorites in collaboration with the University of Florence, Department of Physics and Astronomy and the Department of Earth Sciences.</p><p style="text-align:justify;">The purpose of the tests was to subject the meteorites to the heating conditions they undergo during entry into the Earth's atmosphere at speeds exceeding 12 km/s (43.000 km/h) and acquire the emission spectrum of the ablation products.</p><p style="text-align:justify;">Two meteorite fragments with a diameter of over 1 cm were exposed to a hypersonic jet of plasma composed of air and argon, reaching surface temperatures above 1700°C which activated the material melting and ablation mechanisms.</p><p style="text-align:justify;">During the test preparation were defined the test conditions, the setup of the test instrumentation and of the advanced measurement techniques and were addressed the mechanical interface problems of the meteorites.</p><p style="text-align:justify;">The meteorite fragments were ordinary chondrites, presumably coming from the asteroid belt between Mars and Jupiter, collected on Earth in the Sahara desert between 2014 and 2016 and kindly made available by the Geo Store company.</p><p style="text-align:justify;">In the future, other tests will be performed in the hypersonic CIRA facilities with different types of meteorites to acquire their emission spectra, with the long-term objective of recognizing and classifying meteorites entering the Earth's atmosphere according to their spectrum.</p><p style="text-align:justify;">December 18th, 2017<br></p>2017-12-17T23:00:00Z

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