SpaceX stacks Starship prototype 20 on top of Super Heavy rocket Booster 4 on August 6, 2011.
@elonmusk on Twitter
Elon Musk’s SpaceX stacked a Starship prototype rocket on top of a Super Heavy rocket booster for the first time on Friday morning, giving a look at the scale of the combined nearly 400-foot-tall vehicle.
Musk, asked by CNBC what he thought of witnessing the milestone at the company’s facility in Boca Chica, Texas, responded simply.
“Dream come true,” Musk replied in a tweet.
SpaceX is developing Starship to launch cargo and people on missions to the moon and Mars. Starship prototypes stand at about 160 feet tall, or around the size of a 16-story building, and are built of…