Scientists think they have dust specks from outside our solar system
Call them the seven wonders of interstellar space: Tiny specks of dust captured by a NASA spacecraft may be the first material from outside the solar system ever caught and brought to Earth. Researchers studying the contents of a capsule returned to Earth in 2006 at the conclusion of the Stardust spacecraft's primary mission believe that they have found seven remarkable specks on its collection panels.
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