"Almost 30 years later, with the gas giants long ago seen and done, Voyager 1 is still going and encountering some strange things." Strange things are afoot in the heliosheath.

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No manned missions yet, but at least everyone's talking - and lobbing robots into the sky, of course.

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Engineers envision exploring Mars with mini probes...more efficient, more versatile, less of a financial disaster when one goes wrong.

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