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I'm trying to come up with a good, simple approach for a cratering exhibit
that doesn't involve an open sandbox. If you've seen any cratering exhibits
that worked well, I'm looking for ideas (type of powdery materials used for
the landscape, mechanism for launching & retrieving the projectiles, etc).
Or if you have experience with an approach that didn't work so well, I'll
take cautionary advice as well! 

Thanks,
Tamara

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Tamara Schwarz, Exhibits Manager
Chabot Space & Science Center
10000 Skyline Blvd.
Oakland, CA 94619
phone: (510) 336-7349
fax: (510) 336-7491
[log in to unmask]
http://www.chabotspace.org 

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