SpaceX carries out a successful Falcon Heavy booster landing, of at least one booster in 2017.

Created by atomicspacemann on 2017-01-23; known on 2018-01-01; judged wrong by kuudes on 2018-01-01.

• atomicspacemann estimated 60% on 2017-01-23
• rmeador estimated 40% on 2017-01-31
• kuudes   judged this prediction wrong on 2018-01-01.