This post is a bit old, I made it and then forgot to clean it up and post it...
The occasion of the
X-Prize being completed was the impetus for this post, wherein someone had posted that, while much cheaper, private, and all that jazz, there wasn't anything groundbreakingly different from the
X-15 flights, which were also launched from an airborne platform.
More news of the X-Prize.
There was further discussion of plane-launched space vehicles, and someone mentioned
Pegasus. So I took a look. In fact, if I owned one of these systems, or, more realistically, was designing for this platform, I could read
The Pegasus Users Guide.
Pretty crazy.