Faced with continued launch delays, and a hard September 2010
deadline for retirement of the shuttle fleet, NASA is scrambling to
play "catch-up" on its obligation to wrap up construction of the
International Space Station -- and has scheduled six shuttle
missions this year to do it.
NASA and the National Science Foundation have achieved a new
milestone in conducting scientific observations from balloons, by
launching and operating three long-duration flights within a single
Antarctic summer.
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