The rocket considered to be the most likely to succeed in this respect was the so-called Titan Barbarian ... talked about a diameter core of 19 feet (5.8 meters). In its most potent incarnation ...

Titan is the only moon in our solar ... currently has a targeted launch period from July 5, 2028, to July 25, 2028, on a SpaceX Falcon Heavy rocket from Launch Complex 39A at NASA’s Kennedy ...