Year of the Comet
Comet C/2011 L4 (PANSTARRS)

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Comet C/2012 S1 (ISON)

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Web Extras

Simulating Moon dust

A Wisconsin firm produces simulated lunar soil for NASA — and now you can buy some, too.
By Francis Reddy
Published: January 23, 2006
As Trudy E. Bell notes in "Warning: Dust Ahead," NASA's new exploration initiative creates a need for researchers to understand lunar dust's harmful effects and to devise methods to protect humans and hardware from them. But how do you test technologies without having lunar soil on hand?
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