Every year approximately one million tons of cosmic material enter the Earth’s atmosphere. Not only in the form of meteorites, which in fact constitute an insignificant percentage of falls, but primarily in the form of cosmic dust. Traces were found in Małopolska and among other places it has been detected in the Wieliczka Salt Mine.
However, progressive air pollution makes it hard to study this cosmic dust material as it is more and more difficult to separate it from the substances which are a side effect of human industrial activity.
But a very simple experiment can be done – you only need to dissolve rock salt in water and then bring a magnet nearer to the dissolved sediment. The particles that cling to the magnet are cosmic dust – traces of cosmic material.
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Andrzej Manecki, Meteoryty, pyły kosmiczne i pyły księżycowe, Warszawa-Kraków 1975.