For live coverage of the 6:10pm East Coast Time launch of the DSCOVR Satellite, NASA is streaming it here: http://www.nasa.gov/...
Weather is perfect, the Falcon 9 booster is looking good so far, and everything else is on track so far. To recap, this is a satellite mission originally proposed by Al Gore in 1998. The satellite will be heading for the Sun-Earth L1 Lagrangian point; a position in space where the gravitational fields of the Sun and Earth interact to allow the satellite to stay in a fixed position, where it will be able to watch the sunlit side of the Earth and the Sun continuously. This will have big implications for monitoring both the Earth's climate and the Solar 'weather' that bathes it. Media presentation and more information here.
Additionally, if all goes as planned, Space X will be making another attempt to bring the Falcon 9 first stage back down for a controlled landing on a waiting barge out in the Atlantic.
Lots of hopes riding on this one!
UPDATE: Trying to resolve two issues before the 2 minute point in the count down. If they can't launch on the second, they won't launch today. Retracting the strong back...
And HOLD HOLD HOLD. No launch today. Abort. The strong back is being raised back into position, systems are being safed and shut down. Issue with tracking, problem with downrange radar...
Launch will have to be rescheduled. Earliest opportunity, 6:07 PM Monday.