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| | Space disaster - Wikipedia, the free encyclopedia |
 | | The Soyuz system is often considered to be more reliable than the Shuttle, because 14 have been killed in shuttle accidents (versus 4 killed in Soyuz accidents, however, there have only been 2 shuttle flight fatalities, and the number is higher because of the shuttle's greater people capacity). |
 | | One (Soyuz 1, 1967) due to parachute failure during landing (there were other problems, but this was the fatal failure), and the other (Soyuz 11, 1971) when a valve stuck open during separation of the descent module during reentry (see below for details). |
 | | Adams was posthumously awarded astronaut wings as his flight had passed an altitude of 50 miles (80.5 km) (the U.S. definition of space); however, whether or not the incident technically counts as a "spaceflight accident" can be disputed, given that the flight fell short of the internationally recognized 100 km boundary of space. |
| en.wikipedia.org /wiki/List_of_space_disasters (4659 words) |
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