Wired Danger Room reports on the possible revival of the Blackswift (or son-of-Blackswift) Mach 6 satellite launcher/spy plane/bomber/flying laboratory. I didn't know it existed, much less was canceled.
Take-off from a runway on jet power, rocket to Mach 6, cruise around on a scramjet, and land on a runway - The Blackswift program proposed to merge jet, rocket and scramjet modes into a “combined-cycle” engine. Sounds good. All it needs is money...and new technology.