Have you seen the Hubble Booth - how could you miss it. It is huge. Its jam-packed with technology. Look for the wind turbine model. My friend Dick Erdel took me all through the booth. Hubble had to have 4 semi-trucks to bring all this stuff here. It took them 5 days to fill their 4,000 sq ft.
They have a real neat booth toy too. They are giving away a Bass Pro certificate to some lucky person or persons. Ask about it.