· April 12 , 2011 marks 50 years of completion of mans entry into space
o 79 min flight around earth by yuri gagarin in vostok 1
o UN has adopted april 12th as international day of human space flight)
US space shuttle history
· Columbia launched in 1981 disintegrated in 2003(kalpana chawla L)
· Challenger in 1982 blastd in 1986
· Discovery in 1983 ended in feb 2011
· Atlantis in 1985 to be shutdown in april 2011
· Endeavour in 1992 to be shutdown in june 2011
· International space station- a collab of 16 nations launched in 1998
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