SpaceX Mini-BFS will make fully reusable Falcon 9 and Falcon Heavy in 2019
• https://www.nextbigfuture.com by Brian WangElon Musk tweeted that SpaceX will make a mini-Big Falcon Spaceship upper stage for the Falcon 9.
Elon Musk tweeted that SpaceX will make a mini-Big Falcon Spaceship upper stage for the Falcon 9.