The thing was huge, much larger than I'd expected. Hell, suborbitals only carry about 150 people. How much space do you need for that ? But of course, there's a lot more to a suborbital than the passenger compartment. There's all the stuff that goes into any standard civilian transport: turbojets, fuel, landing gear, navigation drek, baggage bays, and that place up front where the crew and the flight attendants have their parties. And then there's the extra stuff needed when you're flying at altitudes of 23 klicks (75,000 feet, for the metrically challenged) and speeds of Mach 20+. SCRAMjets to get you to cruising altitude and speed. Fuel for those SCRAMjets ... and lots of it (SCRAMjets aren't known for their fuel economy). Cooling systems to keep your hull from melting under the air friction. And on and on. All in all, the suborbital was longer than a football field, a big integral lifting-body with tiny stub wings bolted on apparently as an afterthought. The body lines followed some complex—and very beautiful—multiple-recurve pattern, making the thing broad and high at the nose, but narrower and thinner toward the tail: something like an asymmetrical teardrop, maybe.