SpaceX’s Big Falcon Rocket (BFR), a fully reusable vehicle designed to take humans and supplies to Mars and also to dramatically cut travel time within Earth, is getting a new name, Starship, the company’s CEO Elon Musk has announced.

In a tweet, Musk explained that Starship would be the name for the spaceship/upper stage and Super Heavy would be the rocket booster needed to escape Earth’s deep gravity well.

Technically, two parts: Starship is the spaceship/upper stage & Super Heavy is the rocket booster needed to escape Earth’s deep gravity well (not needed for other planets or moons)

While one Twitter user called the new name “boring”, another was left “pretty disappointed”. Some users liked the name change though.