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Latest Steve "Ark" Vander Ark Stories

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2009-04-10 15:40:00

NASA researchers are about to climb the slopes of Earth's tallest mountain to test exploration technologies they'll need on the Moon and Mars.


Word of the Day
pawl
  • A pivoted catch designed to fall into a notch on a ratchet wheel so as to allow movement in only one direction (e.g. on a windlass or in a clock mechanism), or alternatively to move the wheel in one direction.
The word 'pawl' probably comes from a Latin word meaning 'stake'.
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