know, gravity was simulated making its five-year mission a lot less fun. perhaps, just a bit less moving than the real thing because as much as "star trek" might have changed william shatner's career, he said this experience changed his life. he spoke for a while when he left the capsule today, and it was an amazing thing to see and here. here is a good bit of it. >> jesus. it was so moving to me. this experience. it's something unbelievable. you see it. yeah. you know, weightless. this is so weird. but not as weird as the covering of blue. this is what i never -- oh, it's one thing to say, oh, the sky and the thing and the fragile -- it's all true. but what isn't true -- what -- what is unknown is -- is this pillow. there's this soft blue. look at the beauty of that