Joe Palca Joe Palca is a science correspondent for NPR.
Joe Palca, photographed for NPR, 17 January 2019, in Washington DC.
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Joe Palca

How NASA Averted Mars Rover Crisis

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Oceans on Mars? Rover Finds Evidence of Mars Water

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NASA: Mars Once Held Enough Water for Life

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New Evidence of a Watery Past on Mars

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