MOSH is also an acronym for the Museum of Science and History which is located in the heart of Jacksonville, FL.
MOSH is a cool museum with an emphasis on natural history. (I guess MOSANH just doesn't roll off the tongue as well as MOSH.)
They have a giant alligator snapping turtle
named Tonca and a tesla coil and lots and lots of Van de Graf generators and more fossils than you can shake a stick at. They also have a planetarium that, while not exactly
state-of-the-art, does provide a decent simulation of the night
sky minus the light poliution of a city. Their planetarium also sometimes does (cheesy) laser light shows featuring the music of Pink Floyd and others.
While not as big as other science museums, it is definitely worth checking out if you find yourself stuck in Jacksonville for a day or two.
Overall a very child-friendly place, unlike a mosh pit. When I was
little I went to summer camps there and met an older kid who wore
shirts from cool bands who told me about the more general meaning of
mosh.