[MacNaughton]

Do we have a rocket on which to mount this capsule?

[hattend]

I think it’s going to be an Atlas at first and then the big SpaceX booster later.

[hattend]

I was wrong:

Orion EFT-1 will blastoff atop a mammoth United Launch Alliance Delta IV Heavy rocket – the most powerful booster in America’s arsenal since the shuttle’s retirement in 2011.

Read more: http://www.universetoday.com/105687/orion-crew-module-comes-alive-at-t-minus-1-year-to-maiden-blastoff/#ixzz2ja19Gqu2