standing by now for a go for auto sequence start. t minus 33. hold at t minus 31 seconds. the ground launch sequencer would not hand off to the orbiter s computers to complete the count because the liquid oxygen was showing off when it should be on. t minus 10. go for main engine start. we are a go for main engine start. t minus six, five, four, three, 2, 1, lift off. the space shuttle discovery with the hubble space telescope. our window on the universe. dr. kathryn sullivan, you ve written a book about the hubble and we re going to talk a lot about it today. watching that video all these years later, what was it like for you when you were on board? dr. sullivan: it was one of my lifesaver moments. you just saw the skill, professionalism and calm of that exceptional team on full display. we all sat in the cockpit. we had no role in this,, but we just sat and listened, not to to thementator, but technical communications and followed the discussion through. it was ju