Voyager 1 Approaches the Edge of the Galaxy

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The Voyager I spacecraft was launched in 1977 — 36 years ago — and its still sending messages home. Scientists thought it would have reached the edge of the solar system by now, but it's 11 billion miles from the Sun and hasn't gotten there yet. KCRW's Saul Gonzalez talked with Caltech professor Ed Stone, former head of the Jet Propulsion Laboratory and lead scientist of the Voyager program since 1972.

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Warren Olney