[yonkshi]

This is such a cool concept, I really wish these guys would succeed. Though last time I heard they gave up developing their own rocket (as a second stage to space). Anyone who's in the loop, does Stratolaunch currently have any potential rockets lined up?

[exochrono]

Article states that they're going to use Northrop Grumman's Pegasus XL.

[not_a_terrorist]

They abandonned all development activity of their own rockets, shortly after Allen's death.

[shereadsthenews]

The concept is indeed good, which is why people have been air-launching Pegasus rockets for decades. I’m actually not sure what the new thing is with this aircraft. Just that it can launch three rockets per flight?

[kryptiskt]

They have been contracted to launch Pegasus XL rockets.