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National Aeronautics and Space Administration

Goddard Space Flight Center

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The Cosmic Distance Scale

The Solar Neighborhood

Artist's impression of the stars in the solar neighborhood. Included stars are Altair, Eta Cass, Tau Ceti, Barnard's Star, Epsiolon Eridani, Alpha Centauri, Procyon, Sirius, Wolf 359, and Ross 128. The solar neighborhood is approximately 200,000,000,000,000 kilometers wide.

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Tell Me About the Solar Neighborhood!