Today’s coverage of the Green Run hot fire test is starting at 3:45pm ET. The core stage for I is expected to ignite for about eight minutes to simulate a launch.

Got questions? Use the hashtag https://t.co/CtTdZpMLvl

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NOW: Listen in as our scientists discuss 2016 climate trends & their impacts. Qs? https://t.co/f1K1MFXFRn

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