a VirtualTourist member
Your suggestions on when better for smaller crowds visiting the Space Center, Dec. 31, Jan. 1, or Jan. 6. Seems New Year's could be very crowded but then again it could mean that nobody goes then and it is empty.
I'm not sure about the crowds during New Years holiday but you should probably check their web site. They are probabaly not open on New Years Day and might close early on NYE.