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(CBSNews.com) - The launch of a NASA environmental satellite atop a Delta 2 booster was called off 46 seconds before the planned liftoff Tuesday because of problems with a launch pad water system at Vandenberg Air Force Base, Calif.

Liftoff of the Orbiting Carbon Observatory 2 was targeted for 5:56 a.m. EDT and, with only a 30-second window, engineers did not have time to fix the problem in time to prevent a scrub.

Another launch opportunity is available Wednesday, but NASA managers have not yet announced how they plan to proceed.

When it happens, the launch will kick off a $468 million mission to precisely measure carbon dioxide levels, a key factor in climate change.

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