So, what innovations led to the development of these two rockets? Well, it all started with the DC-X. As the first rocket to boast a vertical landing, it started it all.
It's no secret that NASA, as well as private space companies like SpaceX and Blue Origin are attempting a trip to Mars in the not-so-distant future. Less glamorously, NASA has been launching a series of missions to nearby asteroids using unmanned probes. These missions are immensely expensive and their value is not obvious. There's no chance to discover organic life or liquid water on...