It was a long wait yesterday, and after a couple of holds in the countdown, the launch was aborted with just 1 minute abd 55 seconds remaining.
It is now rescheduled for today and at the time of this blog, it means another wait for 13 and a half hours before hopefully it will blast off on its massive journey to the Sun, reaching speeds never before attained by a spacecraft. This is the ULA Delta-IV - the heaviest of the current range of active rockets. This 3 stage rocket produces the enormous thrust necessary to push the small payload towords Venus and then towards the Sun.
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