Detailed text transcripts for TV channel - KGO - 20110510:10:21:00
System in the past and it really needs to be. i think we need to be at least 100 times safer than say the space shuttle. >> reporter: and this comes as space travel is attracting a lot of new players. richard branson is planning tourist flights, though not into orbit, others are developing versions of the shuttle, with nasa urging them on. >> human space flight is very difficult. its one of the most difficult things that weve done, but its something that weve been doing for 40 years and we feel ...
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