By Robert S. Boyd Knight Ridder Newspapers<p> “We are stardust, we are golden, “We are ... billion-year-old carbon ...” … Joni Mitchell, Woodstock WASHINGTON … Mother Nature is a messy housekeeper. She leaves dust everywhere … not just under the bed, on the closet shelf or behind the pictures on the wall. Huge quantities of dust also clutter outer space, blotting out stars and galaxies and screening the center of our Milky Way from human eyes.<p>***Another successful attempt at ruining a fascinating science story with baby talk.***
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