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ESA Teaming Up With Amateur Astronomers To Spot Near Earth Objects
2012-05-14 11:01:47

The European Space Agency (ESA) is reaching out to amateur astronomers, asking for their help in discovering potentially dangerous space rocks.


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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