It's time I did. It's not the kind of dust you see around here on Earth. In your house, for example, dust is comprised of the dead skin cells, hair, fibers from clothes and dirt. Out in the desert, where I saw the duststorm it's finely powdered rock. But in space, it's something else.
Space is filled with dust.
Look for the Milky Way, the faint patch of light that is actually the glow from all the stars in our Galaxy. In the constellation Cygnus, high in the summer for the northern hemisphere, there is actually a long dark streak through the Milky Way, called the Dark Rift. You southern folks can see a dark patch apropriately called the Coal Sack. Photographs show these even better. Perhaps the most famous case is the Horsehead nebula , located in the constellation of Orion.