In a September 2018 announcement of a planned 2023 lunar circumnavigation mission, a private flight called #dearMoon project, Musk showed a redesigned concept for the BFR second stage and spaceship with three rear fins and two front canard fins added for atmospheric entry, replacing the previous delta wing and split flaps shown a year earlier. The revised BFR design was to use seven identically-sized Raptor engines in the second stage; the same engine model as would be used on the first stage. The second stage design had two small actuating canard fins near the nose of the ship, and three large fins at the base, two of which would actuate, with all three serving as landing legs.  The two major parts of the re-designed BFR were given descriptive names in November: "Starship" for the upper stage[c] and "Super Heavy" for the booster stage.  As of October 2020[update], Musk was spending most of his time at the company's Boca Chica launch site leading the engineering work on Starship development.