Take a look at this very interesting article from the website of Imperial College London.
"Cosmic dust is everywhere, it is on the streets, in our homes, even on our clothes. Each one of us is never more than a few feet from a dust particle from space, tiny pieces of rocks that could be from the moon, asteroids, comets, even Jupiter. Cosmic dust is important since these tiny pieces of rock allow us to study distant objects in our solar system without the multi-billion dollar price tag of a space mission. Despite the ubiquitous abundance of cosmic dust, however, it is difficult to know exactly where in space these little particles are from..."
"Cosmic dust is everywhere, it is on the streets, in our homes, even on our clothes. Each one of us is never more than a few feet from a dust particle from space, tiny pieces of rocks that could be from the moon, asteroids, comets, even Jupiter. Cosmic dust is important since these tiny pieces of rock allow us to study distant objects in our solar system without the multi-billion dollar price tag of a space mission. Despite the ubiquitous abundance of cosmic dust, however, it is difficult to know exactly where in space these little particles are from..."
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