Update 8:24 p.m. ET After trying twice this evening, technical issues forced SpaceX to finally abort the launch. The crew started a half an hour countdown. About sixty seconds before launch, word came in over the radio the crew would be taking "the safe path," this evening. The second launch was off. As Musk explained on Twitter, nothing was wrong with the ship in the lead up to the second launch. It was a gut feeling thing:
We called manual abort. Better to be paranoid and wrong. Bringing rocket down to borescope engines ...— Elon Musk (@elonmusk) November 28, 2013
SpaceX's next attempt will be in "a few days," after the team inspects the rocket.
Update 5:42 p.m. ET Except things didn't go smoothly at all. The spaceship started the ignition process and was two seconds away from liftoff. But the ground computers realized something was amiss and the project was delayed, and possibly aborted, at the last minute.
There's still a chance the takeoff happens today. All is not lost.
Musk discloses the problem:
Launch aborted by autosequence due to slower than expected thrust ramp. Seems ok on closer inspection. Cycling countdown.— Elon Musk (@elonmusk) November 28, 2013
Original After some technical difficulties delayed its initial plans on Monday, Elon Musk's SpaceX program wanted to launch a Falcon 9 rocket Thursday evening, from Cape Canaveral in Florida, marking the first Thanksgiving space launch since 1956. It didn't go as planned.