In Pictures: 21 critical future NASA missions

NASA space plans include trips to Mars, Jupiter, Pluto and the Sun as well as climate change operations

Watching the ocean: Aquarius has been delayed over 12 months but when it launches this year it will have as its mission to measure global sea surface salinity. The satellite will provide a global view of salinity needed for climate studies, NASA said. The Aquarius / SAC-D mission is being developed by NASA and the Space Agency of Argentina.

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