there is a big reinvestment that space activity helps right here on earth. >> harris: i want to talk about what space does to the body. when you are 90, you are prepping for this. you are not flying with the blue angels every afternoon so you know how to clinch your teeth and what zero gravity feels like. i was a child of a combat pilot. what does it do for william shatner to go 62 miles up in the air even if it was only 11 minutes? >> well, the first thing is weightlessness. as soon as that engine shuts off you are floating. you can only experience that on earth for a few seconds if an airplane. that's unusual. i talked about this earlier. you have an urge to flail. it took me a few days or a few weeks before i was really good at floating.